The 36.5 mm is a very classic size for a dress watch and for some the better fit. They just became more supersized in the recent two decades. My recommendation, check for proportions - the watch should not be much bigger than the wrist.
Here are two others, brother and "sister" of the iconic American 1921. The small version of the rose gold American 1921 side-by-side with the original large size. And a very special limited edition made for a motor sports club in the U.S. The missing model is the "normal" dial encased in yellow gold. I don't seem to have an image of that one, but perhaps someone else does...?