[rotorwrench]

Characteristics are the best way to get close to a date but some of those are in the places you don't directly look at. The engines have serial numbers but engines can easily be replaced. Only the late cars had the serial number stamped on the frame. As far as a model T touring car, they looked about the same from 1917 through early 1925 with some differences in cowl shape and engine hood height. The 1926 & 27 cars did a major change. The real early cars up through 1916 were known as the brass cars having more polished brass and engine hoods that are easy to remove as one piece on some so they stand out more as horseless carriage types with acetylene gas headlamps and such.

I can't see the cowl well from the above photos and I see some bits of model A stuff so I can't nail that one down. The engine hood in the back seat area looks like a late type hood with all those louvers but I'd need to see the cowl from the front to see if it fits in at all. If you look at sheet metal on a site like Lang's or Rootlieb, you can see the shapes of the front and rear fenders and such but you'll also see that Ford used the same parts for several year runs on the Ts. A wild guess of what I see in immediate WWI time frame give or take. Electric starters came along in 1919. If it had the dash in it then that would help some. If it has signs of a flat top hood on the cowl then it's 1916 or earlier.