What coin mechanism would fit this please.

[sgc1]

What coin mechanism would fit on this door please.

[lilshawn]

I think that's an old mars electronic coin acceptor faceplate before they became MEI. you likely won't find a good one... or at least one that take modern coins, as they where abandoned/discontinued long ago, and no new firmware updates where made for them for any of the metallurgical changes made to coins in the last 10 some odd years. you also need a special programmer to reprogram them.

your best bet, if you really want to have an electronic mech, is to look at the china ones like so: https://www.sparkfun.com/products/11719 that can be programmed manually by simply hitting a button and inserting the coin/token/washer you would like to accept a half dozen or so times.

[sgc1]

Thanks
Will take a look st them.