Honestly, that almost looks like a stnadard blank door, with some custom work done to it.

I, too, would be curious if this was a factory (either coin door manufacturer, or WMS) option like that.

I have a complete single coin door (I think Italian) that I would sell if interested in the whole thing? It’s in really nice shape

Indeed, that is a blank door ("lower" door for collections,m on some arcade/redemption machines that have a separate door above it with the mechs) that someone chopped up to add whatever mech they decided to use. The door itself appears to be a CoinCo but the mech.. who knows

Richard

Yeah, that's a blank door that was customized. I don't recognize the parts that remain, so who knows.

For early WPC games, they used Coin Controls doors.

Typically, I've seen the 3-slot variant like this, but with the appropriate coinage labels:

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The US door was the same, but just had 2 coin slots, rather than 3:

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I've seen this style of coin door on a couple WPC games, though I'm not entirely certain that it's era appropriate. It's also a Coin Controls door, but it seems like it might actually be for Data East games that were possibly converted for use for WPC games by swapping the coin door's harness.

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Pinball machines can bounce around a bit as they are bought and sold. It's possible that they could have been owned by the same operator at some point.

I don't think it came from the factory like this, but distributors and operators changed mechanical coinacceptors to electronic ones for reliabilty.
This door is for the Mars 5 inch ME126 family and this acceptor was at the time widely used in gambling machines across Europe. In pinball it is one of the lesser common used electronic acceptor but i have come across a few over the years as well.