Ford script running board - what year?

I have a single running board with the Ford script on it. Comes with brackets as show. I do not know what year it is or which model(s) it was used on. Can anyone ID?

Looks to be for a T or TT truck.

Could it be for a tractor?

I, personally, have never seen a running board on a tractor.

Model T Ford car only not TT Truck or tractor, 1915-20.

Boards and brackets are the same left or right side but as the board has a bevel on the front end we can determine this as assembled came off the right side.

just as a sidenote now that we know these are for a T, you could buy running boards for ford tractors such as the 8N, They came with a small footrest only and it was common to install runningboards on either side of the tranny for better foot support. I do think they were most likely dealer installed aftermarket and do not remember seeing the Ford script on them. But that was a very long time ago, so not positive.

Just for fun I googled ford 8n and almost all of the tractors had the running boards, so I am now thinking the later ones were probably factory.

I have access to a larger/later year Ford tractor (1953'ish vintage). It has running boards. They do NOT have the Ford script, but are original to the tractor from the factory.

I do not doubt Layden's time interval, but I am thinking also that this design was retained even later into the 20s and Model A Pickups even, but perhaps these wee different?

The 28-29 Model A boards are like these but without the script. The 30-31s are wider in the front and taper back.They all have the diamond plate.

The assembly pictured is not later than 1920 as 1921 saw new pressed steel mounting brackets instead of these cast style. The board itself continued to 1922. The 1923-25 board is identical except an added bolt hole where the splash apron attaches. 1926-27 saw a redesign with new dimensions and no longer a large FORD script across the center. Model A boards are different yet and so it went!