I agree Jeff, although that Catalogue was a strange one, giving the wrong model reference number. I do think that it was a low production watch, but agree that its certainly not single figures.

Although, even if say 500 were produced, the real question is how many survive today? Not many, but they're not impossible to find.

I wrote this article a while back, to try and answer some of the questions about this watch

http://www.calibre11.com/heuer-autavia-diver-100-secrets/

Cheers

dc