The Wiki entry for Minoan Moulds of Palaikastro includes this schist carving from around 1790 BC, described as casting mould with rectangular spokes and a serrated edge/gears and female figure.
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I still feel that the resemblance to the some of the gears of the Antikythera mechanism is remarkable. The larger cogged wheel in the mould has a very similar cruciform structure to the AM's central "Calendar Wheel" and the smaller wheel to the left of the female figure has 30 marks around its perimeter, which corresponds to the Minoan standardised month. So, this would appear to have calendrical significance, just like the AM. As the carving above was a mould, it would have produced bronze artifacts - a couple of geared disks and a figurine in relief. The former probably of astronomical/calendrical significance and the latter likely being ornamentation, rather like the bull symbol found near the AM.
Given the close proximity of the Minoan centres in Crete and Antikythera, it seems very plausible to me that these Minoan moulds represent an earlier blueprint or precursor to the Antikythera Mechanism.
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https://en.wikipedia.org/wiki/Minoan_Moulds_of_Palaikastro