Wow!  I recognize these only because I got to play with a motor centrifugal starting switch like one of the ones shown in the chart this weekend.  These motor parts look as if they were meant for motors on GE laundry appliances or dishwashers from the mid to late 50s.  

This kit was used for repairing-replacing centrifugal switches in GE built laundry and a few GE DW motors, I have one of these kits but have never used it yet.

It is probably worth closer to $100 or less [ it looks like a lot of the more common parts may be gone ], so good luck to the seller.