Yes, 7.65 is the European designation for the .32 Automatic cartridge.
A few hundred to multiple thousands of USD depending on condition and who did the engraving.
Try e-gunparts.com
40's and 50's
A model 765 PIONEER bolt action .22 will vary in value, depending upon condition, from EXCELLENT - $175 to FAIR - $50.
No one that I've heard of. Now, a 7.65mm bullet is a different story. Numerous makers of ammunition and components for reloading are out there. Do an internet search.
There are many different kinds of 32 ammunition, it might or might not be the same.
Try these websites ......WWW.cheaperthandirt.com.......WWW.gunsamerican.com
50-500 depending on specifics
Needs to be checked over by a gunsmith.
NEVER attempte to fire ammunition in a weapon it is not chambered for.
Try gun shops, gun shows, e-gunparts.com, want ads.
ammunition is available for both the 32 cal semi auto and revolver..................