gosh that blue AT 2500 would definitely be a contender for me if it wasn't for that white date window. Why Omega Why?Yeah, it's always so difficult to tell. My wrist shot was with a 90mm lens, IIRC, so it obviously is going to look smaller than often seen cell phone shots.
The 38.5mm AT is actually quite a bit smaller than the 39.2mm AT, too. Like with the Speedy, some of that 38.5mm is taken up by the little integrated crown guards. The 39.2mm AT/Railmaster 2500 is probably closer in size to the 41.5mm AT 8500:
**not my pic
AT 8500 41.5mm vs AT 2500 39.2mm