Another forum seemed to have a guy replying to peoples queeries, but it was a few years old that thread. There are no forms, you will have to either decipher or contact them.
Note the lack of "Made in USA", thus denoting these are pre-1970 guitars.1994 Electric Gibsons.For many vintage instruments, determining the date of manufacture involves little more than running the serial number through a reference guide.Whereas Martin guitars have been using a single, consistent numbering system since the 19th century, Gibson has used several different serial number formats since its inception in 1902, meaning that some formats and numbers overlap across decades.Determining exactly when your Gibson specimen was made can have high stakes attached to it.
A difference of only one year - sometimes even several months - can mean a four-figure difference in value.
Our hope is to make the dating process and, in turn, the valuation as easy, accurate and transparent as possible.