Hay Peale,
Surprisingly enough, I have a metric ton of .900 tokens and games O Lotomus.

I was talking to you a while back about your .900 mechs and the emails kinda died out. I still would love some!
Do you have any pics of the mechs?
Here is my problem: I have both plastic and Metal coin mechs. The metal ones have three threaded screw holes on each side.
(THIS IS GOOD) These are for screwing into various types of coin doors. If you are using an old midway door (IE Pac man) these screw holes have stand-offs (aka Studs) screwed into them so it appears that there are four pins on the sides. Here is a Happ metal coin mech :
http://www.happcontrols.com/coindoors/42303900.htm and those side studs can be unscrewed leaving a threaded hole. If you look carfully you can see that there is a threaded hole at the midpoint of the two studs. Usually coin mechs have 3 threaded holes per side for mounting into various doors.
It seems that Happ has taken to MOLDING these standoffs into the sides of the mechs.
(THIS IS BAD) This type of coin mech is only useful if you are going to use old Midway doors or
brand new happ doors. BUT, if you plan to use vintage over/under doors these new happ mechs Stink on ice. The studs can't be removed and if you cut them off you must drill out the side and then tap the hole. You can see the four molded stud version on happs website:
http://www.happcontrols.com/cc/42307900.htm I foolishly assumed when I purchased this style from Happ that the studs were threaded. Now I have a boat load of useless mechs (well, I did use 2 on my Pac-man and that's about it!)
So... On the sides of your .900 mechs... are there three threaded holes? Or two molded in studs?
If you need me to, I can shoot some pics and post - but it won't be until Monday. I have my son's first communion Sunday.
Dan