Is there a definitive guide to Coin Door Identification somewhere?
I see folks throw around names like "Coin Controls", "Happ", and others... yet I've yet to see a door with a makers' name stamped anywhere on it. Sometimes I see IDs on the coin mechs, but not always and again there's dozens of types of those.
Even between just the Sys 11 games I own and others I've worked on, are at least 3 or 4 "you'd think they're identical but SURPRISE they're not!" coin door variants. Never mind other builders and eras, etc. And the mechs inside a given door may be easily swapped and changed... or maybe not!
End result is it's very frustrating to think you have a spare part or know what you're dealing with, only to find out you don't... and have no reliable idea how to determine what you actually need or where to get it from.