A burgundy velvet cardboard lining is found inside.
Dimensions: approximately 3.5" across x 1.5" tall (91 x 37mm).
The bottom stamp reads, "© Disney Reed & Barton" with the number 381.
Also on the bottom of most boxes is a Reed & Barton foil sticker. A couple of slightly different examples have been seen; one indicates a 100 year warranty.
Mickey and Minnie are pictured on the original box.
Image and info via falinetwo + gneice.
Possibly dates from the 1990s.