Oh two other things.
It is interesting the flywheel has a screw and the end pulley unscrews too. I don't recall seeing a Weeden where the flywheel had a set screw but it came in handy when I was polishing the tank!
On the shipping box, there is a 9 cent stamp, which I believe is a 1914 9c Franklin, salmon red stamp (from my Googling). You'd think that Youth's Companion would go through their stamps, so this could be a 1914 engine or not much after 1914. Heck, makes it a good paring for the Hoisting Drum as Frank's site says you could only get that
accessory from 1915 to 1917!
Edit: Clearly I don't know about stamps but I get its a thing with people that collect. I am sure a proper stamp expert could nail down the year, as they all have their personalities.
Third Bureau Issues (1908-1922) ...commonly known as the Washington-Franklins Head Issue (or simply the Washington-Franklins) appeared in late 1908.
I think it has 10 perforations, so perhaps it's a
#471 - 1916 - Perf. 10 - Unwatermarked 9 cent Benjamin Franklin stamp - Issued first in
July, 1916. This stamp is also a precanceled, with the solid two lines with "Concord N. H" in the middle of the lines. After this, USPS went with 11
perforations, with the #509 on May 12th, 1917. [ Guests cannot view attachments ]