Aqua terra cal.2500 version

Dixan

Pretty sure the 2503s only have 2500B and 2500C versions. Definitely no D. I’ve owned both 2500B and 2500C. A lot of people prefer the 2500B, for the higher beat rate, smoother second hand sweep, etc. I forget all the details, from way back when, but I know most 2503s will have the 2500C, which is also a great movement. The 2500B just needs a quick jolt/shake to get it going after winding. Something about the 2500B lacking the torque required to start it up. Once it gets going, it’s totally fine. The version is engraved on the outer rim of the movement.

Mr.Wolf

Actually I’m looking for a 2500 39,2mm with black dial. Maybe there’s more references with those specs?

Dixan

I was referring to that model, along with the other 2503 versions (blue, white, silver dials). None had a 2500D. By the time the 2500D came out, in the later 2500 POs and SMPs, I believe the AT had already debuted its 8500 generation. I also believe the earliest 2503s started off with the 2500B. I could be misremembering, from that time, but I was pretty active with Omegas way back then, and I owned almost all those models at some point. I remember reading and discussing this very topic a lot back then. l’m happy to be corrected, but I think that’s pretty accurate. Again, the 2500B had the higher 28,800 bpm beat rate and smoother seconds hand sweep. I wouldn’t count it out. Some actually prefer the more rare 2503s with the earlier movement, or at least have no problems with them. I actually have a 2500B black dial that’s about to go out for a full overhaul, likely with Nesbit’s. Good luck with your hunt.