I'm not totally convinced this is a '70s pattern; looks more like 60's to me. In any case, this is uncut in a size 8 (bust 31-1/2", waist 23, hips 33-1/2") and a very flattering, "modern" silhouette. You can choose a short- or long-sleeve look and choice of fabrics can determine the level of formality -- whether you want to go really casual with a sundress or really formal with a cocktail dress. I can see making many versions of this for work wear, as well.
Although the pattern is uncut, the envelope has seen some rough times, with tears on the back and front around the flap. One side of the envelope has a 4" long rip along the fold, but it seems to be keeping all the pieces and directions intact.
There are three of these on the internet as of November 2014 ranging in price from $12 to $24.