Jody,
you can see the history of dura-ace at:
http://dura-ace.shimano.com/
1984 was the year S.I.S was launched (Orwellian coincidence?)
You can figure out what year stuff was made by locating the two letter date code, stamped on just about every part after 1976.
Grant McLean Toronto.Ca
Shimano Date Codes
YEAR MONTH A 1976 A JAN B 1977 B FEB C 1978 C MAR D 1979 D APR E 1980 E MAY F 1981 F JUN G 1982 G JUL H 1983 H AUG I 1984 I SEP J 1985 J OCT K 1986 K NOV L 1987 L DEC M 1988 N 1989 O 1990 P 1991 Q 1992 R 1993 S 1994 T 1995 U 1996 V 1997 W 1998 X 1999 Y 2000 Z 2001
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Jody Fonseca asked : Can anyone tell me what the '84 D-A
> cranks looked like?