75S-1/2
1958  Serial 1 to 751
1959  Serial 752 to 2052
1960  Serial 2053 to 3185 and 10,415 to 10,583
1961  Serial 10,584 to 11,788 Note:  there appear to be quantity 
 290 75S-3/3A units included in this serial no. range also.
75S-3/3A
1961  Serial no. are intermingled with the 75S-1/2 for this year
1962  Serial 10,000 to 10,999 and 12,000 to 13,175
1963  Serial 13,500 to 14,648
75S-3B
1964  Serial 15,000 to 15,480
1965  Serial 15,481 to 15,949
1966  Serial 16,000 to 16,500
1967  Serial 16,501 to 16,901
1968  Serial 17,000 to 17,380
1969  Serial 17,381 to 17,719
1970  Serial 85,000 to 85,120
1971  Serial 85,121 to 85,xxx (Some numbers appear to not be used)
1972  Serial 85,xxx to 85,882 (Some numbers appear to not be used)
1973  Serial no. are intermingled with the 75S-3C for this year
1974  Serial no. are intermingled with the 75S-3C for this year
75S-3C
1964  Serial 10,000 to 10,480
1965  Serial 11,000 to 11,326
1966  Serial 11,327 to 11,515
1967  Serial 11,516 to 11,709
1968  Serial 11,710 to 11,862
1969  Serial 11,863 to 11,994
1970  Serial 13,000 to 13,287
1971  Serial 13,288 to 13,544
1972  Serial 13,545 to 13,769
1973  Serial 30,000 to 30,350 (includes approx. 120 75S-3B units)
1974  Serial 30,351 to 30,801 (includes approx. 210 75S-3B units)
1975  Serial MCN4000 to MCN4720
1976  Serial "Unknown"
1977  Serial "Unknown"
1978  Serial 12,xxx
1979  Serial C30,xxx (The "C" indicates manufacture in Toronto)
1980  Serial "Unknown"
出典シュッテン:CCA ML