Almost every guitar you see on our website is available in our Chicago guitar showroom.While we carry hard-to-find, top of the line vintage guitars, Rock N Roll Vintage Guitar Shop also carries new guitars and basses from Fender (Squire), Martin, Seagull, Lakland, Hofner, Kay, Hanson, EGC, and other top brands.Where to find the serial number The serial number is stamped or punched on the back of the headstock.Factory Order Numbers (FON) with a letter from 1935 to 1941.
However, in the beginning this was not done consistently, so that there are also be instruments without identification.(G = Gibson, K = Kalamazoo, W = Recording King (Montgomery Wards).If follows there is a third letter E, it stands for Electric.FON consists a batch number of usually four digits, followed by a one letter (sometimes prefixed by a space) followed by one or two digits (ranking).1935-1937: Letter between the batch number and the order number. 0123 A5 1938-1941: Two or three letters before batch number. If there is a second character follows it is the code for the type of the instrument.Exceptions: Some high-end models and lap steels from 1939-1940 have been added the letter A, to the prefixes D, E or F.