Hi

Seller claims this Seamaster cal. 344 has a case size of 39 mm. without Crown and 41 incl.

As far as i know the largest of these cases were around 36-37 mm. ??

I gúess the watch is a 2657 or ?

 

A 2657 I used to own...

 

More like 34 to 35mm. Never seen a Seamaster auto dress watch that big. Maybe calibration of the calipers are in order.

 

You may have never seen, but you're looking at one. 36-37mm is no stranger here.

 

looks like it