I just purchased an M57 Tokarev pistol,and was wondering if I could find an mfgr year? I've seen several lists,but none go as high as mine.The letter in front of my serial number is "P",and the crest on top has the 6 torches.The serial number on the barrel,slide,and frame match,but not the magazine,or the hammer assembly,which has an electropenciled number only. Thanks for any information!