| KM# 3 | 1927,1934,1935,1939,1941,1946,1947 | 5 mils | copper-nickel |
| KM# 3a | 1942,1944 | 5 mils | bronze |
| KM# 4 | 1927.1933-1935,1937,1939-1942,1946,1947 | 10 mils | copper-nickel |
| KM# 4a | 1942,1943 | 10 mils | bronze |
| KM# 5 | 1927,1933-1935,1940,1941 | 20 mils | copper-nickel |
| KM# 5a | 1942,1944 | 20 mils | bronze |
| 2004 standard catalog of WORLD COINS by Chester L. Krause and Clifford Mishler |