The fabric is a poly crepe. Nothing fancy or expensive. This will be an experiment to see if I can resize this vintage pattern to fit me. I'll need to size it up a bit. The zipper and self-cover buttons were already in my stash. I picked up the contrasting crepe for the yoke, and the white lining, at Jo-Ann fabrics, along with some matching thread.
I'll need to do some adjustments to the pattern, and sew up a muslin or two, before I cut into the fashion fabric.