Por numero de serie (frames K miras fijas postwar)
1D Serial Prefix
Models: 64, 65
1976-1977 1D1-1D30000
1978-1979 1D30001-1D45000
1979-1980 1D45001-1D99999
2D-17D Serial Prefix
Models: 10, 12, 13, 45, 64, 65, 547
1977 2D00001-2D80000
1978 2D80001-2D99999
1979 4D00001-6D10000
1980...