Ok, first of all : I love reading your adventures in finding (and getting) all those fantastic cabs! Thumbs up!!!!!
If I'm not mistaking you've got the Galaxian3 Theatre from a Arcade hall in Blankenberge (Belgium coast)
Well, I had the pleasure playing on that same Galaxian3 theatre years back. Hell, I even vomited in that Theatre some years a go after a wild beach party. No kidding. :-) Hope you didn't find any rests of it. rotfl
I'm also a great fan of arcades from day one. My first arcade experience was Asteroids.
And at the age of 37 I still play games on my Mame cabinet, PS3 and X360. Can't stop for some strange reason. :-)
BTW I too made a contribution for keeping those games a life in the form of coding EasyMame. Not a very 'big' contribution but at least I did something for the scene.
http://www.mameworld.net/easymame/Keep posting those fantastic reports!!!