Nice. Dial has the wide oval O and the logo is very close to Omega. I believe those are the attributes of a correct 2915-1,2 dial.
I've spent about 30 minutes with this actual watch on my wrist a few months ago. (Almost) the best 30 minutes of my life... Is it truly a spectacular piece and a full set to boot!
I think the bezel for the 2915 is in stainless steel without the typical black insert that we are familiar with
So the first ones don't have a seahorse? I never knew that, but makes sense.. Learn something everyday.
Maybe it's bleached?? Just kidding, but could not resist remembering how many people made this similar comment to another similar insert that was on another watch few weeks ago.
First thing after noticing the oval "O" is to look at the "m" letter. This is the sharp "m", then it's correct if "OMEGA" and "Speedmaster" are narrowly close to the AML thus indicating the first A1 dial correctly associated with 2915-1 and 2. The center of the chrono hand is a bit too small so perhaps a replacement.
Regarding the chrono second: I'd say you can see this smaller center disk on the first executions. Maybe even more often than the larger one seen mostly on white painted early 2998's. The shape looks ok too with correct length of the tail and not too wide tip. Looks like the tip isn't bent as much as I would expect but there is only one pic showing that and there are others with this more straight looking tip.
It's a great comment actually because the very problem you are having with the photo is why Omega switched to the black bezels. You can't see the steel ones.