Dating gibson les paul guitars
Ranking numbers 500-999 continued to indicate Nashville production through 1989.
Since 1989, all Gibson acoustics are built in Bozeman, MT and all Gibson electrics are built in Nashville or Memphis.
The 1st digit indicates the year of manufacture for the 4 & 5 digit serial numbers, these were used from 1989-1999.
The 1st and 2nd indicate the year of manufacture for the 6 digit serial numbers which we've been using since 2000.
The pattern is as follows: YDDDYRRR YY is the production year DDD is the day of the year RRR is the factory ranking/plant designation number.
Prior to 1984 when the Kalamazoo, MI factory was closed, the numbers 001-499 indicated Kalamazoo production.