NOTE - Gibson USA goes to a 9 digit serial number in early July 2005. 3, 1985, in Nashville and was the 1st instrument stamped that day. 10, 1978, in Kalamazoo and was the 276th instrument stamped that day.Ĩ2765501 means the instrument was produced on Oct. Ranking numbers for Bozeman start each day at 001 and the electrics may start as low as the 300s.Įxamples: 70108276 means the instrument was produced on Jan.

Since 1989, all Gibson acoustics are built in Bozeman, MT and all Gibson electrics are built in Nashville or Memphis. Ranking numbers 500-999 continued to indicate Nashville production through 1989. 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. 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.