Texas Bill

https://www.ebay.com/itm/234205860309?hash=item3687c1d1d5%3Ag%3AhJ0AAOSwK6xhUPfo&nma=true&si=SrsDKFPBTlWdwsYqNjny6%2Fg5nAQ%3D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557 https://www.ebay.com/itm/144215278868?hash=item2193e68514%3Ag%3ADlgAAOSwsYFhTL6x&nma=true&si=SrsDKFPBTlWdwsYqNjny6%2Fg5nAQ%3D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

There were two that recently sold by auction on ebay. One was a KK-2 (with the birds), the other was a KK-1 (plain), the KK-2 brought $10,600 the KK-1 over $5500. The KK-2 had a split side but otherwise was clean, the KK-1 was ready to play but had had some restoration work. I have a KK-1 that besides my '30 Nick Lucas is my favorite guitar

Although I havent used them, I hear from several sources including Jimmy Wallace, that Cigainero Guitar Shop in SE Fort Worth is very good.

I have a '39 KG-14 just like yours, just sent it to David Sheppard to have it X-braced. Your tuners are not original, should be 3 on a strip Klusons.

Here's another good site https://reverb.com/news/how-to-date-a-gibson-using-serial-numbers-fons-and-logos

https://www.guitarinsite.nl/serienummers-gibson_eng.php according to this page 1965

I know these apply to Kalamazoo KG flatops, I assume they also apply to archtops, thus my best guess is 1940. Code Letter and Year A 1935 B 1936 C 1937 D 1938 E 1939 F 1940 G 1941