Does anyone know a site where i can get a Gemeinhardt serial number. Curious about the date it was built in.

Afraid Gemeinhardt doesn't have that type of information on their website.

Try contacting them directly:

Gemeinhardt
(574) 295-5280
57882 State Road 19
Elkhart, IN

This is an old e-mail address for them, not sure if it still works. The number works.
ask_us@gemeinhardt.com