Mine is 600 - 550 B.C. one twenty-fourth Gold Stater, Head of Tunny Fish, Quadripartite Incuse, from Mysia, Kyzicos
I hope that this qualifies. It is a Gold Plated, Bronze, Cowry shell from China. Cowry shells were used as 'currency' from before 1600 B.C., (FROM: Sino-Platonic Papers. 68, May. 1995) Phase 1. Beginning of Cowry-use ---Neolithic era (3300-2000 BC) So, yes, my 'coins' could be 5000 years old.
No longer in my collection focus, but I keep it anyway as a curious little piece and example of early coinage. IONIA, Uncertain. Circa 600-550 BC. EL 1/24 Stater (6mm, 0.50 g). Uncertain figural type (head of griffin or boar?) / Incuse punch.
Your photos are fantastic. The coins display as well as any large work of art. You have raised the bar. During the winter I may have to take up the challenge of doing the same with some of my coins. Not sure I will be able to achieve that high a level, but you give me something to aim for.