| Date | Serial Number |
|---|---|
| 1961 | 100-137 |
| 1962 | 138-277 |
| 1963 | 278-327 |
| 1964 | 328-417 |
| 1965 | 418-466 |
| 1966 | 467-584 |
| 1967 | 585-727 |
| 1968 | 728-847 |
| 1969 | 848-979 |
| 1970 | 980-1081 |
| 1971 | 1082-1135 |
| 1973 | 1136-1425 |
| 1974 | 2057-2573 |
| 1975 | 2574-3702 |
| 1976 | 3703-4456 |
| 1977 | 4457-4703 |
| 1978 | 4704-5304 |
| 1979 | 5305-5782 |
| 1980 | 5783-6191 |
| 1981 | 6192- |
| 1983 | prefix "33" |
From 1983 to present, the prefix number plus 50 will give you the year of manufa