The Old Town build record for serial number 159548 shows a 13.5 foot long lapstrake outboard model boat in AA (or top) grade with a middle deck, a keel, outside stems, and a floor rack. It was built in March, 1953. The original exterior color was natural (clear varnish). It shipped on March 17th, 1953 to Clayton, New York.
That is outstanding information, many thanks. I will see the boat again later today with a Mercury motor expert and this info in hand. Wish me luck!