Many players don't, and sometimes (unless you bought it from new) it can be hard to tell.
Les Paul Classic: This model features an ink stamped serial number with no "MADE IN USA" (just as we used on the original 1952-1960 Les Pauls).
Most will be 5 to 6 digits in length, but the earliest examples feature 4 digit serial numbers.
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.
(G = Gibson, K = Kalamazoo, W = Recording King (Montgomery Wards).
The age of a Gibson guitar, along with the physical condition and relative rarity, are the major factors in determining its value.
While physical condition can be assessed with a careful inspection, rarity and date of manufacture are not always easy to determine.From 1902 to 1976, Gibson instruments have a serial number or a FON (Factory Order Number) or both.However, in the beginning this was not done consistently, so that there are also be instruments without identification.In most cases, they'll help you date your instrument.Michael Black has been a freelance writer based in South Central Pennsylvania since 2010.Where to find the serial number The serial number is stamped or punched on the back of the headstock or acoustic in the sound hole.