This is McCall's 2751 "A Pounds-Thinner" Pattern in a size 10. The pattern itself is from 1971 and I just love the dresses that can be made from it. Included in the pictures is a close up of the sizing chart.
This pattern is from a series of patterns that McCalls produced to create a slimming silhouette, each of the views is intended to slim in a different way.
The pattern is cut, the sleeves that were cut were short sleeves but the long sleeve piece that was cut off is included and could easily be taped on if that is the style that appeals to you.
The pattern includes instructions for the cute butterfly Appliqué on Version A.
The pattern itself is in great shape but the envelope has seen better days. It is splitting down the one side.