Beltone was a brand name for jobbers Perlberg & Halpin, New York City.
Who do you suppose made this banjo for them? https://www.ebay.com/itm/BELTONE-VINTAGE-4-STRING-BANJO/313310712507?hash=item48f2c612bb:g:HXwAA
I’ll put my cards on Rettberg and Lange.
More photos would help. I'd like to see the inside of the pot.
Click on link provided in OP and more pictures including inside rim.
Almost identical to a lange tenor I have.
Thanks for the ID. It is more likely than not a Lange then.
The "Beltone" logo seen on the ebay banjo posted here is what I believe to be the 1920's version of the logo. It changed later.
1920's vintage Beltone banjos are interesting from the very variety of makers used by Perlberg & Halpin. Attached below are a few 1920's Beltone pegheads which are different from the OP Beltone. So I guy could own a "Beltone" banjo that is really a Lange, or Slingerland, or Stromberg-Voisinet, or etc (see unknown below).
The botton photo in John's post looks like a Bacon.
Mark, that interests me a lot because I converted a Beltone mando-banjo nearly identical to this auction Beltone in aesthetics and construction. If you look, the Ebay banjo, like mine, have a Bacon style dish tonering. Pretty cool!
'Dooley' 2 hrs