Hey all, I'm new to Omega. Can anyone tell me the difference between the 1750043 vs. 3511.50? Am I reading the reference numbers wrong? http://watchguy.co.uk/service-omega-speedmaster-175-0043-calibre-1155-valjoux-7750/ https://www.omegawatches.com/watch-omega-speedmaster-automatic-date-st-175-0043 https://forums.watchuseek.com/f20/new-me-speedmaster-date-3511-50-a-527259.html Also, why is there hardly any information on the 3511.50? And the omega site/vintage database turns up nothing when 3511.50 is searched? Thanks in advance. Regards, Mike.
In my limited understanding, 3511 is called a reference number and 175 is called a case number. There can be lots of different case numbers within a reference. Here's a breakdown on the different 3510 "reduced" models that might help. As you'll see, saying "3510" doesn't really point to a specific watch, so people tend to use case numbers more often in discussion---175, 145, 168, etc. https://www.watch-wiki.net/index.php?title=Omega_Speedmaster_Reduced