I pulled it out of an 1926 International 2 ton Speed truck. The truck was heavily modified for logging and had a very old Buick straight 6 mated to what I think was the orginal Internatiinal tranny. Mounts were fabricated to hold the auxiliary and bolted directly to the frame. As far as casting numbers, they are in 5 places but I believe are only relevant to each part. The lower fron and rear 4 bolt bearing caps are the same part and have tje same casting number. The main housing casting number is unreadable as is the top casting that houses the shifting rods. Interesting enough there casting with a small logo which appears to be an H in an oval. This is consistent on the plats that hold the bearings even with different casting numbers.