This pattern is a woman’s twinset and a man’s pullover. They are very basic styles with plenty of room for adjustment and embellishment. It comes from a vintage booklet with patterns for basic sweaters. The published date is actually 1945.

It is organized by age (child to senior). The sizes are vintage sizes, or sewing pattern sizes, so the 12 would translate roughly to bust 34. The pattern is written out, no charts, with minimal instructions.