It’s had a professional neck reset; you can see where the neck / body join was retouched in the process.Amazing Gibson bass growl in the neck position and good funk sound back at the bridge.
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).
It was also from 1970 "MADE IN USA" stamped on the back of the headstock.
Some instruments from the fifties also had been such a stamp. At serialization in the 70s a random method was used.
In a random sequence numbers were stamped on the back of the headstock. In 1970, the orange labels in the body of acoustic guitars were replaced by white with orange rectangular labels.
The electrical models were provided with a rectangular with black and purple triangle.Factory Order Numbers (FON) with a letter from 1935 to 1941.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).Therefore, the production in 1959 may be a "1", "2" or "3" in the second digit.Gibson stopped the stamped serial numbers at the end in 1960, although there are a few guitars made in 1961 with a "1" as a prefix.For over a century, Gibson guitars have been considered some of the very best in the world.