Numismatic Puzzle: A Celtic Tournament Horseman

The piece from today’s puzzle comes from auction 419 by Künker:

Celts. Pannonia. Tetradrachm, “tournament horseman” type, around 150 BC. From Kress auction 135 (1966), No. 219. Extremely rare in this quality. Extremely fine. From Künker Auction 419 (2025), lot 32. Estimate: 15,000 euros. Hammer price: 24,000 euros.

Have fun with the puzzle!