Gibson used the 6 digits or less impressed serial number style from 1961 until 1975. Gibson guitars with MADE IN USA impressed below the serial were made from 1969 and on. If your guitar has 6 digits impressed on the headstock and a MADE IN USA underneath then it was likely made between 1969 and 1975.

How do you date a vintage guitar?

How old is my Vintage guitar? Locate the serial number on the rear of the headstock. Ignore the letters of the serial number if they have any. The first and second number indicates the year of manufacturer, ie 99 = 1999, 07 = 2007.