A letter before or after the number may indicate plant:
Before 1977, Gibson used several overlapping and sometimes repetitive systems that make precise dating difficult. gibson serial
These guitars often have serial numbers that like vintage numbers. A letter before or after the number may
In 1977, Gibson introduced a standardized 8-digit system (extended to 9 digits in 2005) that remains the primary method for Gibson USA, Acoustic, and Memphis. gibson serial