I believe someone looks to have somehow put a nail as the shaft thru the armature and added the gear to the end , and in the process destroying the brass bushing , just my guess.
Also missing are the brushes that I’ll probably have to make from either Marx or Lionel brushes .
I only purchased the chassis / motor because of the interest I’ve always had in Sakai and never actually owning one.
A few years ago at a train show I should have bought a complete set cheap but passed on it.
The seller didn’t even have a clue as to what it was . Just something you don’t run across very often .
I’ll try to add some pictures here later , thanks for the input guys .