Odd O-22 Switch Motor Internals & Bottom Plate

I was working on serving a batch of O-22 switches and came across one that had some ODD Features/Internals.

And wondering if anyone else has come across this variation?

See the series of pic's - attached

First off there was (1) MUCH larger than normal screw holding the switch motor in place See Pic.

Ground Strap Connection for Motor

Third there were (3) HEX HEAD screw holding the bottom plate on not the normal (2) slotted screws.

Fourth the Ends of the Rails ALL had plates holding them spread apart where usually they need to be expanded back to normal from wiggling out the pins.

It has a internal marking of (O-22-3 in the pic with the rails straps)

Lastly the one wire that usually goes Over the internal connection was Under the connecting strap