I have 8 different ones, Sorry for the poor photo:
Top row: 1974 Vol 1 #1; 1977 Vol 3 #1; 1979 Vol 1 #1 (!)
Middle row: 1980 Vol2 #1; 1982; 1983
Bottom row: 1984; 1985
Now, it's very obvious that the numbering is all over the place! In fact, it does not make any sense at all!