A nice light ice aqua colored CD 257 mouse-ear insulator. Has patent dates of May 2 1893 and June 17, 1890. The L-H ear has chip damage and I have more pics of that one request, there's a tiny middle saddle groove edge rub, a match head micro-flake on the mold line of the R-H ear side, 3 drips flush removed, and 2-3 drips slightly flaked. Will fill a hole in your collection nicely until better comes along. Many more pics on request. $30 + actual shipping.