The medallions with the NOA rating would have been issued after the industry changed to that method of horsepower rating, which, IIRC, was 1933 or so.
The aluminum tag, I have seen those on many motors built earlier than 1933. Usually I find them on a carb needle valve. Who put them there, and when I have no clue. I have a couple of Lockwood Chiefs that came with those tags wired to the carburetors. One is a mint original motor that came in a Lockwood shipping crate, so I’m thinking it was hung there at the factory, but who knows….
Look in the directory portion of the Outboarder, seems somebody was advertising repopped NOA medallions in there.. if all else fails, look on Fleabay
Best,
T2
.
.
