Serial Numbers Gibson ★ Works 100%
[Letter]-[Number]-[Number]-[Number]
In recent years (post-2014), Gibson has experimented with barcodes and QR codes on the label inside the guitar body, which can be scanned for immediate verification.
Early 4 and 5-digit variants leave a distinctive gap after the year prefix. The Overlap Era (1961 – 1975)
Gibson simplified its layout for a five-year window, completely abandoning the day-of-the-year identifier:
