I got this coin on eBay and the original title was: "Medieval Billon Silver Coin Ancient Lot 1400's AD Antique Old Cross Keys Pirate"
but it looks like Papal States coin with legend: Obverse: Pavlvs PP III ; and on Reverse ST PATRENIA and something else I can't read...
did anybody come across something similar? I would like to find a match and get more info about my coin...?!!?


Here's another question: I found a similar coin on Italian eBay: https://www.ebay.it/itm/164599134151?hash=item2652df77c7:g:XBgAAOSwWmhf41Gq


This one on (second image) of ST PATRENIA (St. Peter?) is mirrored compared to my coin... so is my coin a forgery by pirates (a contemporary imitation?) or is it a variation of the coinage back then, would like more info on that, please...!!!
Here's what I know about my coin: Size: 17mm || looks like a Quattrino || and looks both Copperish/Billon AR... || Pontificus Pavlvs III ruled from 1534-1549...
Thank you in advance for your help...!!!