Mills Slot machine question.

[oldslotman]

Just make sure the glass is 1/4 inch thick.

Jackpot glass is 3/8 inch

[MONTI]

Here below is a photo i had recently sent to a customer with the Front Jackpot issue showing a measurement of the original laminated glass that was used on the Mill's slot machines!
Being laminated it was considered safety glass in those days!
3/8's" is the size needed for a nice original snug fit as it was designed for!
Hope this helps!
MONTI

[wallruss001]

Amazing find, Congratulations!
I like using kerosene with a stiff artist brush and old toothbrush for cleaning, then dry with compressed air. 3+1 oil and synthetic grease work great for me.