You have an aging unicorn.
Parts and mags will be extremely difficult to find or worse... more than likely, worse.
Having said that, if it had 2 mags I'd have a hard time not buying it. If it only had one, I don't know.
Im pretty sure, that none of the other Bersa 32acp mags will work as-is and I've never heard of anyone modifying any of the Bersa mags from 1 model to the next in the same caliber.