Westinghouse 475KHZ IF?

[Davala]

Here is a Westinghouse h-126 that obviously was running quite hot! On both IF can's someone wrote 475.

I haven't hooked up my signal generator yet to see if it really is 475 or 455KHZ....

Why would have someone change the IF frequency(if that's really whats going on here....)

Thanks!
Matt Davala