Gibson custom shop serial number dating
(G = Gibson, K = Kalamazoo, W = Recording King (Montgomery Wards).
If follows there is a third letter E, it stands for Electric.
The letter preceding the batch number in the FON, and indicates the year of production. Y1234 23 This were used from 1952 to 1961 on archtop models and stamped on the inside of the F-hole. An ink-stamped number from the back of the headstock. No serial numbers were used, Gibson just started therewith in 1953.
However, in the beginning this was not done consistently, so that there are also be instruments without identification.This Article is designed to assist in dating and/or identifying instruments manufactured or distributed by Gibson Guitar Corp.