Take your pick of 3 different sizes and shape of spare tire hold brackets.

Depending on the size from right to left the longest one is 10.25, then 9.75 and 8.5 inches.
The 9.75 inch version has an oval hole and the others a circular hole. The wing nut bolt may or may not be included.

It fits models of the 50’s up. Part number for the later W108 and W109 was- 1088980032

Price is for one.