Numismatic Puzzle: Emperor Ferdinand and Prague Castle

The piece featured in today’s puzzle comes from the upcoming Künker Auction 425:

Ferdinand I, 1835–1848. Gold medal 1836, by J. D. Lerch von Lerchenau, commemorating his coronation as King of Bohemia. PCGS SP 62. From Auction Künker 425 (2025), Lot 1424. Estimate: 8,000 euros.

Have fun with the puzzle!