We have the folowing sumerian proto-cuneiform labrys-like signs,
From https://cdli.ucla.edu/tools/signlists/protocuneiform/archsigns.html Sign AB~a
“house,temple” Another sumerian sign almost identical is the sign UNU Folowing you see the sign UD-UNU (sign UNU under sign UD:”sun”)
From enenuru.proboards.com/ “The formula for a geographical name is this: DN+UNU This stands for – divine name + the sign UNU – . What is interesting to note is that these geographical names, for example UD+UNU (Larsa), or SHESH+UNU (Ur), seem to be direct adaptions of the Early protoliterate City Seals. This becomes clearer still when we note the cuneiform sign UNU, a part of the geographical names, (when flipped vertical) appears to be a direct adaption from the ‘base’ or ‘stand’ in the seals. It symbolises the abode of the deity, so UD+UNU, is the home of the Sun god, and the UNU is a part of his temple or ziggurat. And here we see the ePSD entry for unu as dwelling: “unu [DWELLING] (1511x: Lagash II, Ur III, Old Babylonian) wr. unu6; unu2; unu “banquet; dining hall; the most sacred part of a temple; seat, throne; dwelling, domicile, abode; temple”
Sign ZAG~a
and ZAG~c 
s155239215.onlinehome.us/turkic/40_Language/SumerDictionaryEn.htm
————————————————————————————– From https://www.researchgate.net/figure/Diachronic-change-in-sign-forms-between-Archanes-Script-AS001-and-Cretan-Hieroglyphic_fig11_328919412

We see, minoan sign, excepting the handle, is close to sumerian ZAG-sign.
MINOAN LABRYS SIGNS WERE FOUND IN MANY PLACES (caves) WHERE WORSHIP RITUALS WERE PERFORMED. Labrys signs and double-headed axes (labrys) made of gold and bronze, were found in caves where rituals for an astral-Goddess A-SA-SA-RA were performed and also in the Bull-God/Minotauros and King Minos palace. I AM NOT SURE IN WICH MEASURE LABRYS WAS AN ICON OF DIVINITY AND POWER OR WAS A PLACE-MARK OF THE GODDES or KING(MINOS)/SUN-GOD-BULL SHRINE, PALACE AND PLACE, “LABYRINTHOS” Remember that above-described ssumerian signs were related to: – abode,temple (AB,UNU) and to – shine of metals (ZAG) IN FACT SIGN LABRYS WAS – related to”LADY OF THE LABYRINTH” and her SHRINE (A-DI-KI-TE DA-PU-RI-TO-YO(LABURYINTHOS) – the sign itself depicts the phisical object, the metal double-axe/LABRYS So if not had a direct sumerian origin, IT IS EVIDENT A RELATION EITHER OF SHAPE AND OF MEANINGS BETWEEN SUMERIAN SIGNS AN LABRYS
Note I remark that no other best or close analisis/aproach on the early Aegean “labrys sign” possible origin and coresponding meaning exist, or was made by anybody else. ( eg. compare with Mrs. G.PAPAKITSOS & I.KENANIDIS similar approaches)
=========================================== Minoan sign could had at the origin the sumerian proto-cuneiform signs, but as well could emerged independently, or rather BOTH HAD AT THE ORIGIN THE SHAPE OF THE ORION CONSTALATION , wich for both civilisations was related to archaic hunter/fighter so an icon of power ! (same at egyptians Usir(Osiris)/god-Sirius/star-Orion/constellation relation. Not “maybe” but sure, the story begins in time of the paleolithic hunter-gatherers, falowed by the shepperd-hero, but from the start maintaining a continous relation with the sky and stars so these personages being in same time astral deities.
From O R I O N: THE ETERNAL RISE OF THE SKY HUNTER http://www.andrewcollins.com/page/articles/Orion.htm
<< This small plate, made of mammoth tusk and just 38 millimeters (1.5 inches) in length, 14 millimeters (0.55 inches) in width, and 4.5 millimeters (0.18 inches) in thickness, was found in the Geißenklösterle Cave in the Ach Valley of southern Germany (see fig. 1). Carved into its surface is a human figure, thought to be male, his arms raised above his head and his right leg extended as if about to walk. Dr Michael Rappenglück, an expert in ancient astronomies with the University of Munich, believes the tiny panel shows an abstract image of the Orion constellation (Whitehouse, 2003, and Pettitt, 2003). The figure’s slim waist and “sword,” which hangs between the figure’s slightly parted legs, one shorter than the other, appears to confirm this conclusion. Rappenglück proposes that the carved image is a depiction of Orion as the sky hunter. On the panel’s reverse are 84 mysterious notches, pecked out with a sharp instrument. These might easily signify the number of days in three complete lunar months, each of 28 days in length, linking the panel perhaps with the female menstrual cycle, and even human pregnancy. Yet Rappenglück goes further, suggesting that the 84 notches mark the total number of days the Orion star Betelgeuse (Alpha Orionis), remained visible in the sky around 32,000 years ago. If Rappenglück is correct, we have in this panel not only one of the oldest known representations of the human form, but also the first “star chart” in human history.>>
Fig. 1. Small ivory plate found in the Geißenklösterle Cave in the Ach Valley of southern Germany, thought to show the figure of Orion in his role as the sky hunter.
From The oldest representations of the Orion constellation. http://www.abovetopsecret.com/forum/thread1017579/pg1

From Orion Constellation Myths of Sumer, Babylon and Egypt http://www.astronomytrek.com/orion-constellation-myths-of-sumer-babylon-and-egypt/
Earliest story concerning Orion was recorded by the Sumerians who ruled the southernmost region of Mesopotamia, or the land lying between the rivers Tigris and Euphrates. To this urban civilization, the constellation represented their hero Gilgamesh, whose exploits were immortalised in the first surviving piece of heroic literature called the Epic of Gilgamesh. While records point to Gilgamesh being a historical king who ruled over the Sumerian city of Uruk in southern Mesopotamia sometime between 2700 and 2500 BC, the mythology describes Gilgamesh as a demigod possessing superhuman strength whose great accomplishments assured his divine status amongst his subjects.
Amongst Gilgamesh’s many great deeds was ordering the city walls of Uruk to be built, and wrestling with the wild man, Enkidu, representing the natural world, who was sent by the gods to humble him. Following a fierce battle, they became great friends, and enjoyed many adventures together, including killing Gugalanna, the Bull of Heaven, who had been unleashed by the supreme god Anu to kill Gilgamesh after an appeal by his daughter the goddess Inanna (Akkadian: Ishtar) whose affections Gilgamesh had spurned. The Sumerians subsequently honored the struggle by depicting Gilgamesh in the celestial heavens as the constellation of URU AN-NA (“the light of heaven”) fighting a bull, identified as the modern nearby constellation of Taurus. Amongst the attributes ascribed to the constellation of URU AN-NA was a bow in Gilgamesh’s left hand, an axe in his right, and a sword hanging from his belt. …………………………………………
The ancient Egyptians believed that the gods descended from the three stars of Orion’s Belt, and the bright star Sirius in Canis Major. Orion was originally regarded as the god Sah (Sahu), the “father of the gods”, with Orion’s Belt imagined as a crown upon his head, while the star Sirius was his wife Sopdet (Sothis), a fertility goddess whose earliest depictions were either as a reclining cow with a flower between its horns, or as a woman wearing a tall crown adorned with a five-pointed star.
Sah and Sopdet were later syncretized with the deities Osiris and Isis, and while the appearance of Sirius (Isis) rising with the Sun (heliacal rising) around the time of the summer solstice following a 70 day absence heralded the flooding of the Nile and thus the start of the agricultural year, the appearance of the three “king-stars” of Osiris (Orion) at night after a similarly absent period, before pointing to Isis, signified the flooding’s end around the time of the winter solstice.
The constellations associated with Osiris and Isis showed the deities standing on their separate celestial boats, both with human appearances, but with Osiris having green skin and a false plaited beard. Osiris was the deity in charge of death, the afterlife, and reincarnation, and the Kings Chamber in the Great Pyramid of Giza, completed around 2560 BC, was built with its southern air shaft pointing towards Orion’s Belt as a celestial marker for the pharaoh who would unite with Osiris in the afterlife and inherit eternal life. Incidentally, its northern shaft aligns with the circumpolar stars, where his soul would ascend to the celestial realm of the indestructible, undying stars that never set, a perfect destination for a king’s soul.
From Amanda Laoupi: the Pelasgians spiritual substratum of the Bronze Age Mediterranean and circum-Pontic world (4) http://www.q-mag.org/amanda-laoupi-the-pelasgians-spiritual-substratum-of-the-bronze-age-mediterranean-and-circum-pontic-world-4.html
<< Thus, the author estimates that the labrys was mainly a Moon/Venus symbol, representing both the female elements of chthonic prehistoric cults of the Great Mother Goddess, and the destructive powers of cosmic and natural phenomena, later transformed into a dual archetype like the ankh, symbolizing the wholeness of the Cosmos and of human nature (Nikolaidou, 1994: symbol of dualities like male/female, nature/culture, Earth/Sky).
On the other hand, the author agrees with the amazing hypothesis which has been made by Henriksson and Blomberg (2011, p. 65) naming Orion/Sirius as the Minoan constellation of the Double-Axe! This fact could explain the strong correlation of the Moon/Venus with Sirius.

=The hypothesized Minoan double axe on 21 September 2000 BCE, at 23.23 local mean solar time, at Knossos, when Sirius became visible above the Ailias ridge. The center of the door of the Central Palace Sanctuary is at azimuth 100° (http://minoanastronomy.mikrob.com/ fig. 5).After Henriksson and Blomberg, 2011, p.65=
The double-axe was, also, correlated with the ‘horns of consecration’, often being the symbol of Poseidon, the ‘Earth-Shaker’ or of Zeus with his thunderbolts (Evans, 1901, p. 107; Castleden, 1990, p. 130, pp. 135-136; Haysom, 2010). Moreover, in the ancient Anatolian and Mesopotamian myths, the great goddess had a male companion in the form of a tree or a bull, e.g. Kybele-Attis, Ishtar-Tammuz, Aphrodite-Adonis (Evans, 1901; Nilsson, 1950, pp. 400-404 and Figs. 56, 61, 71-73). This youthful god was also depicted with goddesses on the tree-shrine scenes of Minoan seals, having a central position in the Minoan religion as a male fertility god, a ‘Year-Spirit’ (Castleden 1995, pp. 125-26). The sacred tree, the sacred bull, the young male ‘Year-Spirit’ were part of a general symbolism. Thus, according to one version of symbolic decipherment, the Cretan Dionysos/Adonis, the Minoan & Mycenaean Poseidon/Poteidan, and the deity of double axes may all have been expressions of the same Minoan god, who could have been the male partner of a Minoan female solar deity (Evans, 1901, p. 168; Evans, 1930, pp. 457-458; Castleden, 1990, p. 129). On the other hand, the priests at Delphi were called ‘labryades’. Other researchers (Cook, 1914; MacGillivray, 2004, p. 332) interpret the double-axe as the symbolic marriage of solar and lunar calendars, which produce Asterios (the knowledge of the starry sky’s periodicities). …………………….>>
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Note On the Tartaria oblong tablet with hole, picture: https://www.dacoromania-alba.ro/nr27/cultura_si_civilizatiile_la_tartaria.htm
We have 2 signs (lowest row, 2–nd and last signs) wich are both close to sumerian sign ZAG but in my opinion much close to sumerian signs AB and UNU/UNUG. In this case signs are not related much to labrys but to BOUNDARY, DWELLING, TEMPLE, ABODE. (Same opinion has bulgarian assirologist R.Kolev) ===============================
From Orion (constellation) https://en.wikipedia.org/wiki/Orion_(constellation)
Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous[1]and recognizable constellations in the night sky.[2] It was named after Orion, a hunter in Greek mythology. Its brightest stars are the supergiants: blue-white Rigel (Beta Orionis) and red Betelgeuse (Alpha Orionis).
The earliest depiction linked to the constellation of Orion is a prehistoric (Aurignacian) mammoth ivory carving found in a cave in the Ach valley in West Germany in 1979. Archaeologists estimate that it was fashioned approximately 32,000 to 38,000 years ago.
Ancient Near East
The Babylonian star catalogues of the Late Bronze Age name Orion MULSIPA.ZI.AN.NA,[note 1] “The Heavenly Shepherd” or “True Shepherd of Anu” – Anu being the chief god of the heavenly realms.[6]
In ancient Egypt, the stars of Orion were regarded as a god, called Sah. Because Orion rises before Sirius, the star whose heliacal rising was the basis for the Solar Egyptian calendar, Sah was closely linked with Sopdet, the goddess who personified Sirius. The god Sopdu is said to be the son of Sah and Sopdet. Sah is syncretized with Osiris, while Sopdet is syncretized with Osiris’ mythological wife, Isis. In the Pyramid Texts, from the 24th and 23rd centuries BC, Sah is one of many gods whose form the dead pharaoh is said to take in the afterlife.
Greco-Roman antiquity
Orion’s current name derives from Greek mythology, in which Orion was a gigantic, supernaturally strong hunter of ancient times,[11] born to Euryale, a Gorgon, and Poseidon (Neptune), god of the sea in the Graeco-Roman tradition.
Asian antiquity
In China, Orion was one of the 28 lunar mansions Sieu (Xiu) (宿). It is known as Shen (參), literally meaning “three“, for the stars of Orion’s Belt. (See Chinese constellations) The Rig Veda refers to the Orion Constellation as Mriga (The Deer).[16] It is said that two bright stars in the front and two bright stars in the rear are The hunting dogs, the one comparatively less bright star in the middle and ahead of two front dogs is The hunter and three aligned bright stars are in the middle of all four hunting dogs is The Deer (The Mriga) and three little aligned but less brighter stars is The Baby Deer. =======================================
Image, “Harappan seal” https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRToMSHOPcst4tIFUgy53GANQssbtaRO8fYzmvfsSTRYvLnzu1P

From Bronze-age glyphs and writing in ancient Near East: Two cylinder seals from Sumer http://bharatkalyan97.blogspot.com/2013/04/bronze-age-glyphs-and-writing-in.html
Impressions of two cylinder seals (Sumer) and glyph of ‘ingot’. The person at the feet of the eagle-winged person carries a (metal) dagger on his left-hand, clearly demonstrating the link with this metalware catalog.