Very cool you found them! I broke the points screw that held them together they were 4/40 sized. Should of looked at grainger too for them. Found the screw on an old set of points.
Tubs,
Been thinking about your magnet charger. To have a reverse polarity switch your unit must have a bridge rectifier in the cabnet. Those early selinum rectifiers were not that good & would fail. They were used on Mercury alternators & always went bad. Maybe yours had failed & not providing D.C. power to your windings, worth a check. Many mail ordeer places for bridge doides.