It should be noted that this medal is from 1875 or later. That exuberant engraving of the beard is romantic. Not like the more neoclassical imperial style of the mid century.
https://upload.wikimedia.org/wikipe...ularmar).pdf
The dies and the gold version were announced in 1875. This strike in copper may be from the same time or a restrike. Dating medals are complicated. Old newspapers or catalogs of collections are some times the only sources of information left.
https://upload.wikimedia.org/wikipe...ularmar).pdf
The dies and the gold version were announced in 1875. This strike in copper may be from the same time or a restrike. Dating medals are complicated. Old newspapers or catalogs of collections are some times the only sources of information left.

























