Usually an ink-stamped number. The first digit indicates the year (e.g., 7 xxxx is 1957).
The remaining digits represent the plant batch/production number. Example: 90235041 1st & 5th digits = 95 (1995) 2nd, 3rd, 4th digits = 023 (Jan 23rd) Result: Made Jan 23, 1995. gibson serienummer check
Usually a stamped number on the back of the headstock. Usually an ink-stamped number
Generally do not have this stamp. If a "vintage 1962" guitar has a "MADE IN USA" stamp, it is likely a reissue or a fake. 4. Custom Shop & Reissue Systems gibson serienummer check