Well, I did say 'Aussies call them 750s'...

My recollection of these dates right back to when they actually were selling them, and as a keen young kid taking an interest in every car I saw, with a father who knew what they all were, I would say my introduction to the 750 name was about 1951 and I have never heard anyone, not ever, call one a 760.

It would be interesting to see the relevant page in a Glass' Guide.