I don't know what the numbers mean, since I'm not a piano technician. If I had to guess just looking at the photos and what information you've provided is that you have an old Wurlitzer, back when they used to make semi-decent pianos.

But of course, that's just a guess. The music rack looks familiar, and I know that brand was popular before the 1950s. I guess what I'm trying to say is I have no ****ing idea.

If your piano tuner doesn't know, I'm willing to bet he knows the name of a qualified technician who can look up those numbers you tracked down and find out what exactly you have.

Please don't hesitate to give me positive rep if I'm correct :D

Good luck.

I belong to a few piano forums when I have questions about music. It's the same as CP where everybody thinks they know more than the other guy.

The main difference between the two places is everybody on the piano forums can make complete sentences. They also all know how to spell.