Ludwig Serial Number Guide*
Ludwig Drum Badge Number 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.
*Ludwig Drum Company