@stillrunners looks like the sandwiched the wheel between the 2 parts of the center of the T wheel and used the bolts to clamp it together.
the 6 holes on a model T hub do not fit anything that i have ever seen except for the flat center ( like a farm hay rack wheel ) that were made just for that purpose in the 40's when making a wagon out of a T was common on the farm. most times the poor folk put what ever wheel they had 4 of in stock and drilled 6 holes in it to mount it. in those days you could buy a factory made tongue and steering set up from sears or wards that bolts on the front axle to make a wagon out of that old dead car out back. very common, i have seen many. now this wheel, with the raised up ring for the hub cap to mount is unique, i know i have seen them before, but cant give an ID on the spot.
i would say more like traditional survival during the war years. if you had a model T based wagon, which many farms did, at some point you exhausted your supply of model T clincher tires, and if you were lucky you got some model T 21" wires so you jumped up a decade or so, but really if you wanted to have wheels on the wagon that tires were available, then you went to 16" drop center wheels and mounted them by what ever means you had at the farm
in todays " antiquated" SWI66 post # 28554 has some fancy car that the wheels look like a match. what is it?