[t42]

Whatever happened to just calling it "engine number" and "chassis number"? Before the chassis number was stamped onto the frame (1925 I believe), just the engine number was used to register your title. I have a build sheet for my early Cadillac and they called the engine number the "serial number" and the license number was a Selden Patent Plate number. I had two dealer replacement engine blocks (1926/27 style and a 1929 A) that had a bare area where the engine number would typically be found. Dealer repair shops would have stamped the replacement block with the original engine number. Most just swapped out replacement engines and did not bother with correct numbers.