Aussie Bloke,
An image, courtesy of the ETF site, of an earlier S,K & F color mobile unit. I believe this truck held the NTSC RCA TK-41 cameras that went into service in 1956 replacing the CBS field sequential system:
SKF-medical-color-TV-PC1.jpg
Address:
http://www.earlytelevision.org/image...lor-TV-PC1.jpg
Not sure when the Monash unit donated by S,K & F was used or if they switched to later Marconi color cameras. My impression is that the truck does not look like it was from an American manufacturer. Hopefully Monash can supply you with informantion.
-Steve D.