New, nos, Passenger Aircraft Overhead Swivel Light Assembly

New, nos, Aircraft Overhead Swivel Light Assembly as shown on photo. P/N unknown. Installation hole distance is 1 3/4" from center of hole to center of hole. It has 28V bulb installed, P/N GE1495 but 14V bulb can be installed to use assembly with 14V systems, (not included). No lens cover with light, (buld is accessible just by reaching in).