Hi Franke,
I love that book! It's been a long time since I've read it, I need to go back over that section again. I love the Comex and Pan-Am history.
Thanks for the clarification, I understand my confusion now. I think the author is in error on one minor point. He says:
The GMT Master (not the II) was indeed offered in two tone (14K/SS). Perhaps Mr Dowling meant that it was not offered in this combo when it was ORIGINALLY introduced, but there are plenty of vintage examples for sale today. Here's one on eBay dating back to 1969: http://cgi.ebay.com.sg/1969-SS-14K-GOLD-RO...bayphotohosting
I think it most likely that Mr. Jeanneret designed the original GMT as a stainless steel pilot's watch (this is well documented) and Rolex later offered it in two-tone.
Thanks again,
Tony.