[Arran]

Hi;
The closest model that I can find in my collection of schematics is once for a model 742 and a 743, the chassis layout and tube lineup looks identicle to the one in your set but both of these models are from 1950 not 1952. My guess is that they probably used the same schematic and service information, at least for the radio, on the 742,743,and the 753, although it wasn't unknown for any manufacturer to change part values or update things from year to year. Where abouts are you in British Columbia?
Regards
Arran