Identify Transmission

So I’m having trouble identifying my 3 speed column shift transmission even after reviewing my service manual and searching the web. On the passenger side is stamp H 6 and 4153 on the top is 5071...it’s from a 57 S100 . Appreciate any insights

Per my MT-103 parts catalog there are 2 3 speed transmissions listed
Either a T-1, code 13001 or a T-2, code 13002

It most closely resembles the 13001, but not an exact match.

You can see the previous year model transmissions at http://restoringcornelius.com/?s=mt-97#rparts

Thanks going to have to pick up that parts manual

maybe this one

Oh so this is the T1...This looks differnet to me...not sure I’m lookin at this right but appears the linkage is coming from the side. The linkage on mine comes out the top..and has a hump in the middle where the linkage connects

I was not aware IH made 3 different 3 speed Transmissions, this is a T-5, I think this is the HD