Weymann Guitar, info sought.

I have a Weymann guitar and am seeking information regarding it's history. This instrument belonged to my father who passed on in 1991. I believe he purchased the guitar in Philadelphia sometime prior to WWII. I'd like to know more about tho guitar. Other than the maker's nameplate in the back of the neck there are a series of numbers stamped into the top of the neck above the tuning pegs. The numbers are, 16602 (over) 30 (see photo).

I can provide additional photos to whomever is interested in helping me with this project.