I've been researching this new acquisition, and haven't been able to find a reference to it in Dattari (the original edition, no access to Savio) or any auctions that I've checked. Since the university semester is over I can't make a trip to the library to check RPC there, but if anyone has access to it would they mind checking for it? There are several issues with the same reverse which are very close (Dattari 618-624), but none that are the same. The date appears to be, to my eyes, Year 6 (LS), but Dattari has that date as being present only on the obverse (Dattari 621), whereas mine is on the obverse. Has this coin been published previously?