Trajan sestertius, 29 gr, CONSERVATORI PATRIS PATRIAE, extremely rare...My only consolation is that this is the 4th known piece...(if I'm not mistaken)
Wow, that really saw some use - I would guess 50 years or more. High velocity pieces like these can be misleading though.. I encountered a 10 dirham in Morocco which was only G in 2018 (date unreadable), these were only started in 1995!
Awesome. I bet it was exciting to find one with a very small known population. My avatar is one of only 2 known.