Canvas covered dinghies were first listed in the 1902 Robertson & Old Town Canoe Company catalog and the first lapstrake boats were listed in the 1932 Old Town catalog. I'm not aware of Old Town ever offering a lapstrake boat in a ten foot length. Many builders didn't start with serial number one and they would also frequently skip large ranges of numbers. It was not uncommon to encode model, date, and other information in the serial number. The serial number 7602 in this boat does not necessarily mean that the builder had made that many boats. It looks like a nice one regardless of who made it.
Benson