For US instruments, the serial number will start with a letter. That letter indicates the decade. The second character will usually be a number. That number indicates the specific year.
How do you read a G&L serial number?
Starting in February 2017, serial numbers are laser-etched on the back of the headstock. The serial number format was changed to: CLFYYMMnnn, where YY=last two digits of year, MM=two digit month.
When did Kay stop making guitars?
1968 Kay Musical Instrument CompanyTypePrivate (1890–1969) Brand (1969–present)Defunct1968FateCompany defunct in 1968; Brand acquired by W.M.I. in 1969SuccessorWeiss Musical Instruments (1969-1980), The Kay Guitar Company (1980-present)Key peopleSidney M. Katz Tony Blair8 more rows