This blond CTC 5 HAS a 21CYP22 replacement all-glass CRT subbed in place of the original 21AXP22A metal-cone CRT that was changed out sometime in this TV set's life. I got a 1956 RCA Westcott CTC 5 that's GOT the original 21AXP22A metal-cone CRT and there's also a greenish-gray color also to the original 1956 21AXP22A CRT as opposed to the more grayish color to the later Colorama and 21CYP22-type CRTs as seen here. The original 21AXP22A CRT also had a dimmer picture than the later Colorama and 21CYP22-type CRTs as well resulting in this CTC 5 losing it's original 21AXP22A CRT to this later 21CYP22 CRT that was most likely installed in the early to mid-1960's on this set. When looking at any CTC 5, check the CRT that it's the original
21AXP22A CRT and this will have a major impact on the value of that particular CTC 5 color set. If it's not a 21AXP22A CRT in that CTC 5, the CRT has been replaced and upgraded-simple as that. Another vintage color TV collecting tip from Electrome:-)