I just recently bought a Kay Airline N3 archtop. It beautiful and sounds great. The seller didn't know what year it was made and I'd like to find out. After scouring google, I still can't find much help. The serial number is L3090 6416. If anyone knows around what year this was made or where I could find out when it was made, that'd be great. Thanks.

(the one in the picture isn't mine but it looks essentially the same.)

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