Gibsons then most sustainable numbering system was launched in August 1977, with a stamped-in 8-digit number. The 1st and 5th digit represent the year of manufacture. The 3 digits in-between denote the day of that year, while digits 6 to 8 give the production number.

How do I tell what year my Gibson SG is?

There should be a space after the 1st digit with the 4 and 5 digit serial numbers, and no space with the 6 digit numbers. The 1st digit indicates the year of manufacture for the 4 & 5 digit serial numbers, these were used from 1989-1999.

How do you authenticate a Gibson SG?

How to spot a fake Gibson:Measure the guitar to check if its undersized. Examine headstock and headstock logo to determine that they match those of authentic Gibson guitars.Check to see that all pearl is inlaid.Check that Les Paul model script is always in cursive.Verify that theres not a 3-screw truss rod cover.More items •4 Sep 2008