Help with a Speedmaster reference number

Well, it depends on which model family you're looking for - there's the Broad Arrow Co-Axial line, which looks like this:



And the '57 line, which while not named Broad Arraow does feature arrow hands, and looks like this:



Both lines of which all came with sapphire crystals and display backs AFAIK. You may want to narrow your search by product line

The only Speedmasters under 44.25mm with broad arrow hands have hesalite crystals, solid casebacks, and manual-wind movements, so you'll need to compromise on a couple of your criteria. If you're trying to stay under $4k, I'd suggest finding a 3594.50 Replica:



It's a standard Speedmaster Professional case (42mm, hesalite crystal, solid caseback) with the dial & hands made to resemble those from the original 2915. Fortunately as a standard Speedmaster, you could fit an aftermarket display caseback if that was important to you.

Is that a fact? Model 321.10.42.50.02.001. 42mm, broad arrow hands, sapphire crystal, display back. 3313 co-ax Auto movement.

There is a black dial version of this which may be what the OP is thinking of.

Yes indeed:

https://www.omegawatches.com/watch-...ow-co-axial-chronograph-42-mm-32110425001001/

Ah there you go. Thought that model was 44mm too. I don't know the automatic Speedmasters quite so well as the Professionals.

Prices on some of these are all over the place.....
These two watches, are they same reference or different? Help someone....
Am I missing something?

Great choice and enjoy in good health. Does this come in white or panda dials?

Glad you like it 👍 If your budget was 4k, you should have a bunch left over for tons of straps 😀