Watch List notes:

Gordian III Ӕ 25mm of Cassandrea, Macedon. AD 238-244. AY C M ANTΩNIOϹ GORDIANOS, laureate, draped and cuirassed bust to left / COLΩNЄIA CASSANDR[IA], head of Jupiter Ammon to left, erect serpent before. RPC VII.2 Online Unassigned ID 22055 (this coin, temporary). 6.26g, 25mm, 7h.

Good Very Fine. Extremely Rare and possibly unique; only this example in RPC.

This coin published at Roman Provincial Coinage Online (rpc.ashmus.ox.ac.uk);
From a private UK collection.