Way2many, those are either Chorus cranks from 1987-1991, or Athena from 1992-1994. These were all basically the same shape, although there may be some subtle differences between them. They are NOT CdA.
CdA was only available in years 1988-1991, and had the same crank shape throughout - the same as C Record, but with the spider rotated slightly and 5 visible chainring bolts, not 4 and a hidden one like Record. The CdA crank was reused as Chorus in years 1992-1994.
The crank in Taul Paul's pic is almost certainly Athena from 1988-1991. If I remember correctly, the date code of 42 indicates manufacture in the second quarter of 1989 which would confirm that. The shape is very similar to CdA but not the same.
In the end they're all very nice chainsets, and I don't think you can go wrong with any of them! They would all fit the build just as well, I think it would come down to personal preference, or how determined you are on having a complete group.