http://www.earlytelevision.org/class..._for_sale.html
The tail end of that page.
Now, the RCA part numbers for the vertical convergence transformer in the Westinghouse and the transformer in the CT-100 are in fact different; the Westinghouse is 241T1 while the CT-100 uses part 3T127.
But, I have a parts catalog that shows them cross-listed as identical. I think it is safe to assume they're the same part; one part number used for OEM transformers in sets built by other manufacturers, one part number for sets built in-house by RCA.