Introduction to Proof Marks and Other Firearms Identification (1880-1945) (Video) - 12160 Social Network2024-03-28T13:38:46Zhttps://12160.info/forum/topics/introduction-to-proof-marks-and-other-firearms-identification-188?groupUrl=gunsandtactics&xg_source=activity&feed=yes&xn_auth=no