Hi! This coin was on the random coin line on numista's front page. It is a 1 Ducat of George I of
Brunswick-Lüneburg-Calenberg-Hannover.
I thought the portrait seemed cool so took a look and ended up going to the Duke who was listed as Georg Ludwig (George I). However, I was redirected to George III who ruled at a different period of time and is the descendant of George I. When I went from George III's page, it also showed me coins of George I in there this one specifically: N#268312
Is it a glitch? Thanks for reading.