JD three point question...

Sounds like you are describing what is called 800 series hitch. They had the 800 and 801, The flat bar at the top with the hole in is was called the "Evener Bar". The implements would have had a piece on them most commonly called a "Mast" that would hook up to the bar. I'll email you a couple pics I have of 800/801 series hitches. I put an 801 on my '52 A, it works out real well for me. Although I believe the 800/801 didn't come out until the 60's and 70's were introduced. I read somewhere that JD didn't recommend using them on the model A because the front end was too light. I've had some pretty good loads on mine and never had any problems at all.

JDBob