New collector my 2 lugers

[Pat]

Hi all. Here are my two lugers with accesories. I am quite new with lugers and i have question about 1920 commercial luger markings. Does anybody knows what these two letters "P" and "V" mean at lower body?

Another strange marks are at bolt, stamped "32" is it serial number? its strange because all other numbers match.

Could it be calibre mark because pistol is 7.65 cal.? Just to make sure that if spare parts needed they could be regognised? it also have a little different size and shape than other numbers in gun.
Another strange number to me is number "02" in front of body. It cant be serial numbers last two digits because body has already stamped a serial number 2470?

Gun was impoted to Finland 1920. And was used in war world war 2 1944-1945 in northern finland. First against russians and later against former owners Germans In 1950 veteran who carried the gun in war, won the Finnish army shooting competion with it, said it was extremely accurate with shoulder stock attached.
It is all matching expekt the shoulder stock. Holster seems to be 3rd Reich with waa706 marks.

My second luger is S42 1939 Marked with Mauser waa stamps. All matching but i think it is reblued. All parts are blued expekt the sideplate, even the trigger. What parts should be blued? Holster is 3rd reich era with waa286 mark.