by RameGoom » Sat Aug 28, 2021 9:08 pm
The material is actually Beryllium Copper, and alloy, that is a spring material. It's much harder than copper, and is used to hold the coin in a certain position in the escalator. Probably to keep it from dropping too soon. It maintains its spring tension and shape.
Hope that makes sense.
Slowly building a knowledge base on E2000 series Bally machines and J400 Jennings. Started with the antique Mills and Jennings. Getting there...