Those look (superficially) the same as the pots in my CT-100. I found a couple of old photos that may be helpful.
http://antiqueradio.org/art/temp/RCA...VCagePots1.jpg
http://antiqueradio.org/art/temp/RCA...VCagePots2.jpg
Whether mine are original, who's to say, although I have no reason to think that they are replacements.
Nice progress on this set, by the way. You work about 100 times faster than I do.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html