[414CE Koa]

Howdy all!

My Dad has had this Kay Archtop since he was a kid. Played it for a while but it has spent most of it's life in a case. It is actually in very good condition over all minus the neck. It is the old steel reinforced design with my truss rod adjustment. I was thinking of bringing it to a local guitar tech that I use for my other guitars. Honestly minus the bow it is a great sounding guitar. All original I think. Is there something that can be done about the neck even though it isn't adjustable? Also the only markings in the guitar are 339. Does anyone have any info or know where I could find it? I have searched online but have only found 1 pic/video of this exact guitar and it was just a guy playing it.

Thank you!