Here are the "notes" included in the listing on the IPDB listing for "42nd and Broadway". Good explanation for the above.
This is a conversion of Bally's 1951 'Spot-Lite' and may consist only of a backglass change. The backglass does not indicate 'Bally' or any other manufacturer. A change of name was sometimes done to circumvent local restrictions on games. A list of illegal games was used by enforcement officials and if the game was not on the list, it was not bothered.