My friend Nantonos owns a coin (shown below) from the Ekbatana region in the Seleukid Kingdom, reign of Antiochos III (223-187 BC).
This is probably my favorite coins of the one that Nantonos owns. See how the mare is nuzzling the foal’s rump? Mares do that to encourage a foal to suckle. Who ever struck this coin really knew horses.