Displaying here one of the "smallest" and "largest" watches in my collection. At first glance, can you guess which is which?
The one on the left is 43.5mm diameter, the one one the right is 39mm diameter. Funny that the 43.5mm on the left seems like one of my smaller watches and the 39mm on the right one of my larger ones. When I originally ordered them, based solely on diameter, I had the opposite concern.
Just goes to show how much more than case diameter (bezel thickness, dial size, case shape, lug length, etc.) plays into the perceived size of a watch.