My interest of course stems from RRC 14/6 and related aes grave types.
I got thinking about the potential prevalence of this design choice from this coin of Calchedon which popped up when I was looking for something else in the BM search.
The combination of the grain ear and knuckle bone brought to mind early uncia types (Cf. 18/6).
The use of the type at Paphos got me thinking of this other article:
Nifosi, A. (2022). The Throw of Isis-Aphrodite: A Rare Decorated Knucklebone from the Metropolitan Museum of New York. The Journal of Egyptian Archaeology, 108(1-2), 177-189. https://doi.org/10.1177/03075133221137365
But that is besides the point.
My main thought is that the v small coins of Himera are likely to have been the point of influence, if there need be one.
I say if there need be one as knucklebones, astragalos, astragalus, astragal, etc… are ubiquitous in the ancient world as small game objects also associated with divination.
Liv Mariah Yarrow 