Enclosed is a list of Johnson serial numbers by model year. There have been some cases where the actual serial number might fall outside the published range. Not sure about the numbers stamped on your ID plate under the steering bracket and don’t know where the other numbers you were given came from either. In addition to the front ID plate on the steering bracket, you should find a round welch plug on the top right rear of the engine block (just above the exhaust cover) about the size of a quarter that will also have the serial number stamped on it.
Bob
1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20
1982 Evinrude 25hp
“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."
