Very cool vintage gold tone Elvis necklace. Old store stock and never worn. These were made by Boxcar in 1977.
They originally had a plastic bag which was dated 1935-1977, for the year he was born and the year he died. See last photo.
The necklace center measures 1 1/2" long and 1/2" wide. It is dated 1977 on the back. It is 18" in total length.