I have recently begun collecting vintage watches. Attached is a photo of my first UG. I bought it from the Amsterdam Watch Co when we were there recently. It is not large - around 29 - 30 mm diameter but my wrists are not large either. I hope to acquire some more UG, but currently also have a Ulysse Nardin tank c. 1940's and a Maurice LaCroix gold skeleton c. 1980's
I love the Amsterdam Watch Co. I will say though that they seem to have a lot of watches with re-done dials....which is fine but I hope they let people know. JohnCote