From Decades of Style:
"The collar on this vintage blouse pattern is as close to perfection as you can get! This is one of those patterns that will fit perfectly with a business suit or a pair of jeans.
The blouse has cap sleeves with petal shaping at the shoulder edge. There are tucks in the front and darts at the back waist and shoulder to provide shaping. Draped collar and button closure.
Light to medium weight fabric recommended. Make sure your fabric has a soft hand or the collar will not drape effectively."