Chart for various stock advance curves

Ok finally getting back to this/ didn't realize I wouldn't be able to find replacement collars for the shaft anymore, so I had to wait for the mailman to bring me some from Halifax hops.

Dist#1 3656763
Dist#2 3656435
Can anyone tell me what they were originally used in?
What the original specs they were set to?
318-2 3656763 AT/MT all 1973