The Old Town with serial number 190168 is a 15 foot long square end boat model with an outside stem and a painter ring. It was built in July, 1972. This shipped on August 8th, 1972 to Newbury, Massachusetts. A scan showing this build record can be found below.
This scan and several hundred thousand more were created with substantial grants from the Wooden Canoe Heritage Association (WCHA) and others as you probably know well. A description of the project to preserve these records is available at http://www.wcha.org/catalogs/old-town/records/ if you want more details. I hope that you will donate, join or renew your membership to the WCHA so that services like this can continue. See https://www.woodencanoe.org/about to learn more about the WCHA and https://www.woodencanoe.org/shop to donate or join.
It is possible that you could have another number or manufacturer if this description doesn't match. Feel free to reply here if you have any other questions.