they're usually called "coin rejectors", and they are still made with the same form factor.

dime ones are less common and can be a bit of a hassle since dimes are the most irregular of the coins due to wear changing the weight.

usually the slot in the rail is big enough for a nickel, and nickel mechs are more common. You'd need the little coin guide trapezoids that screw onto the mech frame to change to nickels, and change the score card if you care.

I probably have nickel and dime mechs someplace, and if not, the pacific pinball museum warehouse has lots which aren't used. I won't likely be at their warehouse for at least a couple weeks, but if you don't find something in the meantime, contact me at the bingo.cdyn.com web site and I'll stick it on the scrounge list.

I'm sure I have a dime mech that will work for you, I'm out in Aurora. What part of town are you in?

When I was looking to replace my quarter coin mech, I went direct to the manufacurer and purchased a nickel mech. I originally thought new mech would be hard to find. I was wrong

Check your messages Allen.