Leaf switch assembly used in relay stack switches.
Reference:
SW-3M-1
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Coin switch trip bushing Williams

Coin switch trip weight Williams 02-2953

Coin trip wire used on early Williams coin doors for Susan B Anthony coins.

E-clip or e-ring commonly used on many 3/16" mechanism shafts
This is the 5 cent coin switch trip wire assembly used in 70's and 80's Wi...

Williams coin switch dime and quarter trip wire assembly

Armature plate assembly

Coin trip assembly Quarters & Dimes

Small leaf switch assembly used in relay stack switches.

Small leaf switch assembly used in relay stack switches.

Small leaf switch assembly used in relay stack switches.