[ Troy Taylor wrote in 170117 MMDigest:

> I recently acquired a 1920s-era battery radio ... [I seek]
> QRS "Red Top" radio vacuum tubes to display in the radio.

Troy is looking for some tubes for his radio.  Troy, I believe you
should have at least one "type 80" tube for your radio (unless it's
battery operated); that's the rectifier tube, used pretty much until
the end of tubes (although tubes are making a minor come-back amongst
audiophiles, so they never "ended").

Good luck in your search; QRS were never a "major player" so Redtop
tubes aren't common today.

David Dewey
Oroville, California