Year Code |
Month Code |
| A = 1961 | A = Jan |
| B = 1962 | B = Feb |
| C = 1963 | C = Mar |
| D = 1964 | D = Apr |
| E = 1965 | E = May |
| F = 1966 | F = June |
| G = 1967 | G = July |
| H = 1968 | H = Aug |
| I = 1969 | I = Sept |
| J = 1970 | J = Oct |
| K = 1971 | K = Nov |
| L = 1972 | L = Dec |
Year Code |
Month Code |
| A = 1961 | A = Jan |
| B = 1962 | B = Feb |
| C = 1963 | C = Mar |
| D = 1964 | D = Apr |
| E = 1965 | E = May |
| F = 1966 | F = June |
| G = 1967 | G = July |
| H = 1968 | H = Aug |
| I = 1969 | I = Sept |
| J = 1970 | J = Oct |
| K = 1971 | K = Nov |
| L = 1972 | L = Dec |