Ok...... I think I know how this works now, after watching a video on Youtube of a 1940
C.C. "Roxy". This Pin came out in 1940, it may have been the next Pin after o'Boy.
* The lower solenoid is used to remove 'payout' points( Unit scoring) that are earned when Playing.
The Units/Tens lights lite Up as you score points on the Pin; there are settings between 30,000 and
40,000. There are Payout plugs under the Playfield
that the Owner could set for payout purposes.........I forgot about the switch under the cabinet that was used
to reset points after a Payout.......
** Does anyone have a schematic for this payout switch circuitry on a similar Prewar Pin ?
It must provide the voltage to the lower solenoid to walkback the Points earned.
John