In mint condition, this is a very old sterling silver charm made by the J.M. Fisher, Co., in operation from the late1800s-1950s out of Attleboro, Mass. The charm is of a sweet little donkey, or mule, or maybe even a small horse or pony? The JMF stamp is shown in photos 3-4, appearing on both the charm and the jump ring. Measurements/size, photos 5-7. All angles of charm shown, too. The last photo is from the obituary in 1920 of John M. (Melatiah) Fisher, over 100 years ago!