

| Animal> Marine mammal |
| Name | Mark |
|---|---|
| Rome | R |
| Year | Mint Mark | Mintage | Quality | Collection |
|---|---|---|---|---|
| 1951 | R | 40,260,000 | ||
| 1952 | R | 57,400,000 | ||
| 1953 | R | 196,200,000 | ||
| 1954 | R | — | ||
| 1955 | R | 159,000,000 | ||
| 1956 | R | 400,000 | ||
| 1966 | R | 1,200,000 | ||
| 1967 | R | 10,600,000 | ||
| 1968 | R | 7,500,000 | ||
| 1969 | R | 6,995,000 | ||
| 1969 | R | 310,000 | BU | |
| 1970 | R | 4,211,000 | ||
| 1971 | R | 8,600,000 | ||
| 1972 | R | 16,400,000 | ||
| 1973 | R | 28,800,000 | ||
| 1974 | R | 6,600,000 | ||
| 1975 | R | 7,000,000 | ||
| 1976 | R | 9,000,000 | ||
| 1977 | R | 6,700,000 | ||
| 1978 | R | 3,600,000 | ||
| 1979 | R | 4,200,000 | ||
| 1980 | R | 6,000,000 | ||
| 1981 | R | 5,000,000 | ||
| 1982 | R | 8,900,000 | ||
| 1983 | R | 5,000,000 | ||
| 1984 | R | 2,100,000 | ||
| 1985 | R | 3,000,000 | ||
| 1985 | R | 20,345 | Proof | |
| 1986 | R | 5,000,000 | ||
| 1986 | R | 17,500 | Proof | |
| 1987 | R | 7,000,000 | ||
| 1987 | R | 10,000 | Proof | |
| 1988 | R | 5,000,000 | ||
| 1988 | R | 9,000 | Proof | |
| 1989 | R | 2,500,000 | ||
| 1989 | R | 9,260 | Proof | |
| 1990 | R | 2,500,000 | ||
| 1990 | R | 9,400 | Proof | |
| 1991 | R | 2,000,000 | ||
| 1991 | R | 11,000 | Proof | |
| 1992 | R | 1,000,000 | ||
| 1992 | R | 9,500 | Proof | |
| 1993 | R | 1,000,000 | ||
| 1993 | R | 8,500 | Proof | |
| 1994 | R | 1,000,000 | ||
| 1994 | R | 8,500 | Proof | |
| 1995 | R | 3,000,000 | ||
| 1995 | R | 7,960 | Proof | |
| 1996 | R | 2,500,000 | ||
| 1996 | R | 8,000 | Proof | |
| 1997 | R | 1,000,000 | ||
| 1997 | R | 8,440 | Proof | |
| 1998 | R | 1,500,000 | ||
| 1998 | R | 9,000 | Proof | |
| 1999 | R | 51,800 | BU | |
| 1999 | R | 8,500 | Proof | |
| 2000 | R | 61,400 | BU | |
| 2000 | R | 8,960 | Proof | |
| 2001 | R | 100,000 | BU | |
| 2001 | R | 10,000 | Proof |