In all honesty, you are looking for a firm answer concerning a revolver you have not posted photos of. You also have seemingly not explored revolvers of that era so as to educate yourself about them.
In a nutshell, Pietta and Uberti went to CNC machining ~2002. Any revolvers produced prior to that date by any manufacturer (Pietta, Uberti, Armi San Marco, Armi San Paolo, Palmetto, Euroarms, COM, et al,) were produced using parts manufactured by various Northern Italian manufacturers located primarily in the Brescia area. Your revolver marked AA/1975 is one of those. They are all hit or miss insofar as fit and function, and take into account if the revolver has been fired or not. Decent shape means nothing until you have the revolver in your hands and it functions correctly. If not, new Pietta internal parts (bolt/hand, et al) are not the same and won't fit without a lot of TLC, if that.
During this pandemic a lot of used/older revolvers are coming up for sale because the Italian factories are producing very few revolvers and they are commanding large prices. It is a seller's market for the time being.
Spend your money as you wish. The good money goes towards education and it is a lot cheaper in the long run.
Regards,
Jim