Hard rubber with “Don’t Give up the Ship” U.S.N. and anchor on top: Mirror inside (possibly replaced), along with a note: Maynard Family Gales Ferry, CT. Bottom reads: Manufactured by the Novelty Rubber Co. New Brunswick, New Jersey, Under Goodyear’s Patent May 5 1851. Rim is in good condition, solid, no cracks, some age fading here and there. 3.25″ diameter.