This topic has been pretty well beat to death, however. there just might be room for one more.
The tire cover shown on the right of the pix is most likely a '35 car cover, as shown on the cover of the EFV8 Club of America '35-36 Ford Book and on page 22 of same.
This cover was made for the wire wheels, it measures 26.5" OD.
In the past I have had '36 & 37 pickups. To my knowledge the commercial units, pickups, etc., did not have full tire covers. They had a locking band that was secured to the top of the tire mount, extending over the face of the tire with a cap attached which locked into the wheel.
The '35 passenger cars also had a security cap that was attached to the lower portion of the mount/tire.... see page 22 of the EFV8 Club book.
The cover shown on the left is most likely a later model cover, similar to the ones used on the '49-54 Fords, the '56 T-Birds, and other after market "continental kits".
If the left cover has/had slots for the attachment of stainless trim and it measures 26.5" across then it could be for a 600X16 tire which could make it a '34-35 in lieu of a 14"-15" from the '50's