They could be from the original equipment manufacturer or any number of aftermarket suppliers such as Weise
Wheatland: 400 (Gas)
These mounting brackets are for the LEFT and RIGHT sides of the drawbar and bolt to the final drive housings
Often older Case plows are referred to as J
Replaces Case IH Ignition Distributor Cap part number 351693R92
New Transmission Shaft Bearing for Farmall 140, 130, Super A, 100, Super C, and Other Tractors, ST246, FREE SHIPPING They could be from theNew Upper Transmission Shaft Bearing for International and IH Farmall 140, 130, Super A, 100, Super C, C, B, BN and Many Other Tractor Models. Referred to as "ball bearing with snap ring (transmission spline shaft, front)" in Case IH series A thru 140 tractor parts catalogs. Used also in IH Farmall H tractor transmissions as the front counter shaft bearing. Replaces Case IH Bearing part numbers: ST246, 136262R91, 136335R91, 43277D, 700312R91,