Sanjio

Hi there, I'd like to find out the date of manufacture for my vintage L-00. I suspect its between 1936-1938, but was hoping someone might have access to the original sales ledger. 🙂 There is a four digit code on the headstock : 1349 in addition to a Made in the USA engraving A sticker shows it's "made in the USA by Gibson, Inc" Kalamazoo, Mich. Many thanks for your help. Sanj