RCA Radio-TV and Electronics 1953-1954

[Phil Nelson]

Maybe the tube experts know what those CRTs are. At first, I thought 21AXP22, which has a metal bell, but those tubes seem to have a slightly narrower, longer bell than the 21AXP22 that was in my CTC-4:



The 21AXP22 also came after the 15GP22.

Regards,

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[SwizzyMan]

Looks like it could be a C-73547 or possibly a C73293C. I know that the C73293 had its limited production run in 52, but not sure of the C73547 production dates.