Age?

Could use some help trying to determine the age of this Williamson thermoflow NG boiler. Can’t find it in my blue book or online.
Tony and Stephanie Worth 095.JPG

Tony and Stephanie Worth 094.JPG

Walt, it is 80% efficient and the ansi date is 1976 so within 3 or 4 years of that date is my guess.

Hope you’re well and warm in the UP. :smiley:

Thanks Larry. Keeping the wood stove stoked.

Some info here

http://www.buildingcenter.org/Williamson-Thermoflo%20Date%20of%20Manufacture

David