word | refer | text |
| copper | Liberia | Liberia 50 cents 1972 copper nickel |
| copper | Liberia | Liberia 5 cents 1972 (s) copper nickel |
| copper | Macau | Macau 50 avos 1972 copper nickel |
| copper | Macau | Macau 50 avos 1973 copper nickel |
| copper | Malta | Malta 10 cents 1977 copper nickel |
| copper | Maldives | Maldives 1 rufiyaa 1984 AH1404 copper nickel |
| copper | Malawi | Malawi 1 shilling 1964 copper nickel zinc |
| copper | Malta | Malta 2 cents 1977 copper nickel |
| copper | Malta | Malta 50 cents 1977 copper nickel |
| copper | Malta | Malta 5 cents 1977 copper nickel |
| copper | Malaysia - Straits Settlements | Malaysia - Straits Settlements 1 cent 1920 copper |
| copper | Mexico | Mexico 10 centavos 1978 copper nickel |
| copper | Mexico | Mexico 10 centavos 1979 copper nickel |
| copper | Mexico | Mexico 1 peso 1971 copper nickel |
| copper | Mexico | Mexico 1 peso 1972 copper nickel |
| copper | Mexico | Mexico 1 peso 1976 copper nickel |
| copper | Mexico | Mexico 1 peso 1978 copper nickel |
| copper | Mexico | Mexico 1 peso 1970 wide date copper nickel |
| copper | Mexico | Mexico 1 peso 1970 narrow date copper nickel |
| copper | Mexico | Mexico 1 peso 1977 Thick date copper nickel |