ok here it is:
After a bit of research I can say that it started out as a galaxian machine. it was transformed into a galaga machine, and it was done really really well. It has a "gallag" board in it that work flawlessly (with the orig. namco romset). no galaga side art but the galaxian sideart was covered up with spraypaint (ugh). also a "gallag" instruction card in english (which is really quite rare) was taped to the monitor bezel.
All worked well enough with a little powersupply adjustment until one gloomy day when I left it on and the monitor died. I still have a lot of work to do on it but those few months that it worked perfectly are well worth the months Ive put into diagnosing it.
I have since bought an original Galaga joystick to put in it and I am going to get a new UR CP from Mike's.
I overdrew my account to buy it too

- XD
ps. original marquee is flawless!