The middle pcb has the number AA017757 which is matching with Lunar Rescue in Ully's chart.
Your rom pcb and middle pcb (AA017757) are standard Taito Space Invaders hardware pcbs. You will find these on Space Invaders, SI part2, Lunar Rescue and tonens of other 8080 hardware games... your rom pcb at least has been modified in a few ways, and i have a feeling that the big bundle of grey wires from the top pcb go to various points on the cpu pcb.
Your top pcb is very interesting, it contains a whole other bank of 8k ram, and an 8035.. i can't think why they would hack this set so much, but i'm fairly sure this is a factory hack that taito did, or at least, one of its distributers... From the age and technology i would say it could be a Taito version of Sheriff.
I can tell you that it is NOT Taito Gunman (cowboy them).
Oh, and Taito labels from the late 70's and very early 80's that have lettering on them usually don't correspond to the english name of the game, so RF might be a red herring...
I have LOTS of taito pcbs and work on them all the time, if you want the pcb investigating properly i'd love to buy it or look at it on the bench
