Original Pacman and Galaga cocktail cabinets were narrower (on the coin door side) than MsPacman ones (single slot coin doors) per the pics I've seen.
Also, the Pacman/Galaga control panels are shorter (vertically), not as deep (from your stomach to the monitor) but wider (left/right) than Ms.Pacman ones.
Also the woodgrain pattern seems to be more of knotty pine (e.g. larger stripes, knotholes, lighter) than the woodgrain normally seen on MsPacman ones, which is usually dark walnut and thin woodgrain stripes.
But that's just what I've seen over time browsing, not to say they didn't have manufacturing variances in production of them.