Prior to 1984 when the Kalamazoo, MI factory was closed, the numbers 001-499 indicated Kalamazoo production. RRR is the factory ranking/plant designation number. The serial number will be an 8 digit number impressed into the back of the headstock with 'MADE IN USA' below. In 1977, Gibson introduced the serialization method that we primarily use to this day at Gibson USA, Gibson Acoustic, and the Gibson Custom facility in Memphis, TN. This should be an 8 digit number that can be dated by the 1st and 2nd digits as follows: Gibson USA, Gibson Acoustic, Gibson Memphisįrom 1975-1977 the number is typically found on a decal on the back of the headstock. Please note that most of this information relates to serial numbers used from 1975 to present. This section is designed to assist in dating and/or identifying instruments manufactured or distributed by Gibson Guitar Corp.
