Hmm. I restored a 14" Walker Turner bandsaw back in 1997, which included making new nameplates. Back then we all posted to r.c.m. - is it possible you are remembering my old postings? Anyway, I made mine by doing the artwork on the computer, then printing it out and taking it to a trophy shop which had a "photo lathe". I don't recall the precise details anymore but it seems to me that you bought an 11x17" sheet of brass coated in enamel on one side (mine was red). They wrapped the sheet around a drum made to hold sheets like that, and taped my printed-out sheets to another drum which ran under a photodetector. They started up the lathe and slowly walked a .005" cutter the width of the brass sheet. The cutter cut when dark lines were present, and didn't when they weren't. Then they handed me the sheet and let me use their bench shear to cut it into individual nameplates. I flattened them on their wooden bench with some kind of soft mallet.
So my advice is to look up trophy stores in your area, and start asking them how they make plaques.
metalmagpie