This is just a guess, but based on the logos I'd say they were probably some sort of local distributor that branded games with their own mark. Off the top of my head I'd guess their acronym stands for National Amusement Company Services. Since their logo looks like a very simple stencil sort of slapped on in the corner of those marquees, I'm thinking it wasn't originally there. As for the cabinets, my guess would be they were scratch built on the same pattern to house homeless gameboards. Note the coindoors, since one is narrower and longer than the other, someone would have to do a lot of bondoing and wood working to retrofit one to the other if they started as the exact same cabinet design with the same size space for the coin door. The generic CPs, no side art, etc. make me think they probably made the cabinets themselves to fit whatever hardware they had laying around. Thus one gets an over/under coin door and the other gets the rectangle door variety.