I have a friend selling a vintage Speedmaster 321. He says its a 105.003-65 Ed White. I'm new to this site and fairly new to collecting. I recently picked up a nice vintage Seamaster which has got me looking for a Speedmaster. This watch has been serviced and works well. I have some pictures that have included. I do not have a picture of the inside case back to confirm the ref number, but he contends it's the 105.003-65. The first thing I see is the bezel is not the DO90, it's the DN90. It's in ok shape, but not the the original for that ref. To me the dial looks correct, the hands are ok and it has a nice patina. The case looks correct too. That said, the other big issue I see is that the movement, albeit it is a 321 movement, the serial number is a 2732.xxxxx. This should be in a 145.012 with a presidential dial. I have seen discussions how Omega would swap out parts if they serviced back then, or other people would swap parts out too. I have also seen reference to those SN in that range could have been used for spare parts (MWO). I guess the bottom line is if this watch is $8k to $9k USD would this be overpaying? Would it hold it's value? How would you suggest I proceed? There is an Omega AD in town. I could take it to them to look it over. I could try to get an extract, but I still don't know if that tells me the value. Thoughts? Thank you in advance.