Biting off more than I can currently chew... with an RCA 641

[dieseljeep]

Originally Posted by benman94

That makes a lot more sense Eric. The 48th week of 1960 would be more in line with some of the other replacements I found in the set. Also, after looking at the CRT again, I noticed it has the "block letter" RCA logo from the mid-50s, not the Victor logo from the late 40s.
If the tube is a replacement from the early 60s, then this set had one hell of a service life....
I suppose if you spent the $795 on it in 1947 or 1948, you would be inclined to use it until something really major came up.

I think the CRT is from late 1950. It seems RCA didn't use bases with the extra pins after that, unless a electrostatic focused CRT. The only early RCA CRT's that used Electrostatic focus was 7DP4 and the 17GP4.