I wish we had a couple of different photos showing more of the vehicle and what appears to be a trailer attached to it.
Note that it has an above the axle wishbone shown below:
If that front wishbone was original to the vehicle it would most likely have been before Apr 14, 1919. Ref:
https://www.mtfca.com/encyclo/doc19.htm
APR 14, 1919 Acc. 235, Box 39, #385, Ford Archives
"From this date two distinct designs of front radius rods, together with front spring perches, right and left, one on the Model T and the other on Model TT.
"The Model TT design will be assembled beneath the axle, instead of above the axle through the spring perch as heretofore.
"Although it would be possible to use the Model T design on the Model TT, we request this be resorted to only in case of a shortage serious enough to threaten loss of production."
Note that the brake rod appears to go above the rear axle rather than below the rear axle:

- Brake rod appears to be above rear axle.jpg (30.28 KiB) Viewed 1695 times
The brake rod for the car goes above the rear axle (ref -- take a look at your T (yes, I had to look)) .
The brake rod for the Ford Ton Truck with the worm gear rear axle goes below the rear axle:
Or course that may not be the brake rod in the photo, but maybe it is something else? If someone with a Ton Truck can look at their truck from a similar angle -- they can probably tell us if that is a brake rod or if it is something else.
Note there were a few "Make your T car into a Ton Truck Kits that did NOT use the Chain drive."

- Jewett posted by Stan Howe.jpg (56.53 KiB) Viewed 1695 times
(Above photo originally posted by Stan Howe around Dec 2015)
Note the rear wheel hub cap in the original photo looks smaller than the hubcap on the Jewett rear wheel. Perhaps a different style rear axle?
Great photo -- and someone with sharper eyes may be able to tell additional details that would clear it up one way or another (or add yet another possibility?).
Respectfully submitted,
Hap l9l5 cut off