Hans Mennink, co-citizen of the town where I lived for quite some time, wrote an excellent article on the history of the Speedmaster series by Omega. Mostly background information, but comes with some handy facts on Pre-Moon models as well. Unfortunately for the non-Dutch, it is in Dutch and you can find the site here.
However, Chuck Maddox sent me an URL which translates it for the people who can read English. It is translated by a site, so don’t mind the flaws in the text (it translates just about everything, even my Dutch last name ‘Broer’, which means ‘Brother’ in English or ‘Fratello’ in Italian)! Click here for the translated version. Could take a while to load this page, so be a bit patient.
Enjoy and have a great weekend!