I like the PMHs too and have only one caveat. A lot of the two register and a few of the three register examples have chrome plated cases which frequently show wear through brassing. It is hard to see in pictures unless it is at an advanced state. Many sellers will state the watch case is stainless steel based on erroneous interpretation of the printed info on the case back. If it states stainless or all stainless you are ok. However if stainless back or base metal bezel is stated then it is very likely plated. You can buy kits to touch up worn through areas that work fairly well (link).

The Hamilton is SS and the Clebar is brass plated that has been touched up slightly.