The M29-2 Serial Number-Year ID Chart

[marlin58]

To get the dates of the venerable M29-2
M29-2 Number Years:
N1 1969-1972
N100000 1973
N200000 1974-1977
N300000 1975-1976
N400000 1977-1978
N500000 1978-1980
N600000 1979-1980
N700000 1980
N800000 1980-1983
N900000 1982-1986