Numismatic Puzzle: Bracteate of Conrad of Wittelsbach

The piece of today’s puzzle comes from a Künker auction:

Mainz. Conrad of Wittelsbach, 1183-1200. Bracteate, Aschaffenburg. St. Martin with palm branch blesses the bishop; in the middle a tower, around it the legend. From the 1st Odenwald Hoard (Berliner Münzblätter 1885, p. 577). Very rare. Extremely fine to FDC. From Auction Künker 386 (2023), lot 4625. Hammer price: 13,000 euros.

Have fun with the puzzle!