Barber's nickel design. This is one of several patterns for this year using different alloys of nickel and/or copper showing their composition on the reverse within the wreath. Examples were struck as follows: Pure Nickel J1704/P1908. These are magnetic and weigh about 81 grains. Over a dozen are known. Nickel J1705/P1909. These are non-magnetic and are likely struck in standard coin nickel of 75% copper and 25% nickel. Pollock lists only the former Dr Judd coin. Aluminum J1706/P1910 with about a half dozen are known. Photo courtesy of Heritage.