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 can I tell what year my Epiphone Les Paul was made?

Five digits with a space after the first digit and custom shop on the back of the headstock, applied from 1990 to 1999. The first digit is the last digit of the production year, the following four digits are the serial number.

How do I know what model my Epiphone Les Paul is?

All you need is your serial number and soon you will know the model type and model number of the guitar, as well as where the guitar was made. Locate the serial number on the back of the headstock. You will need this to discover your model type. Write the number down.

How do I identify my Fender Stratocaster serial number?

The serial numbers have been placed on or in the guitar in different places over the years. At the top of the neck plate, on the front or at the back of the headstock or on the cover plate of the vibrato (Stratocasters), or at the end of the heel of the neck.