These were issued in sets along with the one cent and 5 cent piece. To view the set, click here. Examples were struck as follows: Nickel J618/P687 with somewhere between 50 and 100 believed struck Copper J619/P688 with less than half a dozen confirmed. To see all available images, click here. Aluminum J620/P689 which is unconfirmed Pollock notes that die varieties may exist. Photo courtesy of Northeast Numismatics.