Thanks for the responses!
Austin, I honestly don't know which clutch style this machine has. I was thinking it would be the early style too, until I looked at the data plate info here at the house. I took a snap of the data plate, but it came out horribly. Through the blur, I think it said GS, for 1953 - but I didn't know they made an original AMP that late? This may also explain the black agitator - but who knows! I think the Rollermatic is a Rapid Dry, at least I am crossing my fingers that it is!
Hey Patrick, I don't know if this has been previously mentioned, but I graduated high school in Fairfield, IA - just down the road - BIG Football rivals.... Washington vs. Fairfield
Steve, I wish the 64 had the correct agitator - as I've never seen a 64 with the actual correct 'three-ring' still remaining! I think my doctor may need to increase my blood pressure meds after this batch... hehe
Robert - I've never seen the early style in black either. I would imagine that it is a replacement, but why wouldn't they have replaced it with a black diaphragm version? Very interesting.
Gary - I didn't see any ABC items in this place - but I'm sure there out there! Just keep your eyes open for that ex-centric action!
Ben