We have a Delta Bicycle Tail light Vintage Item.  I was not sure what this was, I'm identifying it from another like it......  It measures about 6 3/4" from the front of the red green lights to the back of the offwhite plastic x 6" across the metal base.  The metal base is very rusted with almost as much rust showing through as the red paint.  It is marked on both lights "Delta".  The green light back plastic edge is broken off.  I would consider this in rather poor condition

Delta Bicycle Tail light Vintage Item