This is a pair of late 1920's to early 1930's Cuff Links that were made to promote the rural electrification of the US.  Reddy Kilowatt was a marketing thing created in the late 1920's by the utilities.  Cuffs have a clear domed sulfide with the smiled Reddy Kilowatt face.  Excellent used condition.  Guaranteed to please the new owner or I'll buy it back.  Check my Feedback.