[Ron Ramirez]

...He has another neat set which is a  Philco consolete from about 1950. The number he gave me is 50-1721 but  I think that is the wrong number since it applies to  some thirties radios.

No, Sam, 50-1721 is indeed a 1950 model. The 50- indicates 1950 model year.
http://www.philcoradio.com/gallery/1950.htm#s

Now, Ron, before I forget, if you are going to this Meet PLEASE look me up this time and should I be out buying (not as likely since my current interest of getting hi-fi vintage gear has taken over the radio madness!) DO look me up so we can finally meet. Okay?

I will be there. I see you're in the main pavilion this time; which table? I will look you up. Oh, and in May I saw quite a few stereo receivers along with the older radios. I've said it before, I think early stereo gear is becoming the "new" antique radio gear.