ロレックス 製造年代推定表
| 年 | シリアルナンバー |
| 1925 | 25,000 |
| 1926 | 27,500 |
| 1927 | 30,500 |
| 1928 | 33,000 |
| 1929 | 35,500 |
| 1930 | 38,000 |
| 1931 | 40,000 |
| 1932 | 43,000 |
| 1933 | 49,000 |
| 1934 | 55,000 |
| 1935 | 55,000 |
| 1936 | 82,000 |
| 1937 | 98,000 |
| 1938 | 118,000 |
| 1939 | 136,000 |
| 1940 | 165,000 |
| 1941 | 194,000 |
| 1942 | 224,000 |
| 1943 | 253,000 |
| 1944 | 284,000 |
| 1945 | 348,000 |
| 1946 | 413,000 |
| 1947 | 478,000 |
| 1948 | 543,000 |
| 1949 | 608,000 |
| 1950 | 673,500 |
| 1951 | 735,500 |
| 1952 | 804,000 |
| 1953 | 869,000 |
| 1954 | 935,000 |
| 1955 | 1,010,000 |
| 1956 | 1,095,000 |
| 1957 | 1,167,000 |
| 1958 | 1,245,000 |
| 1959 | 1,323,000 |
| 1960 | 1,401,000 |
| 1961 | 1,485,000 |
| 1962 | 1,557,000 |
| 1963 | 1,635,000 |
| 1964 | 1,713,000 |
| 1965 | 1,791,000 |
| 1966 | 1,870,000 |
| 1967 | 2,164,000 |
| 1968 | 2,426,000 |
| 1969 | 2,689,000 |
| 1970 | 2,952,000 |
| 1971 | 3,215,000 |
| 1972 | 3,478,000 |
| 1973 | 3,741,000 |
| 1974 | 4,000,000 |
| 1975 | 4,260,000 |
| 1976 | 4,530,000 |
| 1977 | 5,000,000 |
| 1978 | 5,480,000 |
| 1979 | 5,960,000 |
| 1980 | 6,430,000 |
| 1981 | 6,910,000 |
| 1982 | 7,380,000 |
| 1983 | 7,860,000 |
| 1984 | 8,340,000 |
| 1985 | 8,810,000 |
| 1986 | 9,300,000 |
| 1987 | 9,760,000 |
| 1988 | R999,999 |
| 1989 | L000,001 |
| 1990 | E000,001 |
| 1991 | X000,001 |
| 1992 | C000,001 |
| 1993 | S000,001 |
| 1995 | W000,001 |
| 1996 | T000,001 |
| 1997 | U001,001 |
資料： 「COMPLETE PRICE GUIDE TO WATCH 2000」