Serial Guide
Keystone Badges
Year |
Serial |
| 1961–62 | No number |
| 1963 | No Number – 7900 |
| 1964 | 9XXXX – 33449 |
| 1965 | 108532 – 259XXX |
| 1966 | 260XXX – 449XXX |
| 1967 | 450XXX – 548XXX |
| 1968 | 549XXX – 665372 |
| 1969 | 670XXX – 741215 |
Blue & Olive Badges
Year |
Serial |
| 1969 | 765XXX – 834XXX |
| 1970 | (Out of sequence, unnumbered) |
| 1971 | 835XXX – 895XXX |
| 1972 | 896XXX – 916XXX |
| 1976 | 917XXX – 1290XXX |
| 1978 | 450XXX – 548XXX |
| 1979 | 549XXX – 665372 |
Note: X's are used as digit indicators for this list. X's were not actually used in the serial numbers.