Chuck: you are right about the different M&S 80 faces. My good friend has one, and here is a photo of the face. The face says Martin & Schwartz, Salisbury, MD in small print at the bottom. I also took two screen shots of M&S 80 pumps off the internet, and you can clearly see the "Martin & Schwartz" just under the sight glass. I wonder if Wayne made any faces without the big black blocks, where they just have the name Wayne in small print on the face?