I picked up a couple of these Old Town emblems recently. What boats were they used on? I have a 13'6" lapstrake runnabout with white emblems, not yellow.
These were used on the lapstrake models and first appeared in the 1958 catalog. They came in two sizes as shown below. The serial number from your boat can be used to determine the year. Let me know if this doesn't answer your question. Nice find,