GE Lucalox 50 High Pressure Sodium Electric Bulb

Brand new in box GE Lucalox 50 High pressure sodium light bulb for use only with S68 ballast. Not for use in incandescent light bulb sockets. lu50/med, 50w clear, sodium light bulb, maximum overall length 5-7/8", medium base, 4000 lumens, 24000+ hours, 1900 kelvins, cri=22.