CAPPADOCIA. Caesaraea-Eusebia https://www.acsearch.info/search.html?id=5097978 https://rpc.ashmus.ox.ac.uk/coins/2/1682
Check my second link, there are 29 examples in RPC database, I wouldn't call this rare. But rarity in ancients is very debatable, as long as you like the coin and you paid a correct price in your opinion, that means it's a good addition.