Vintage 50s Deadstock It’s Pure Gould argyle diamond sweater SMALL?

Vintage 50s 60s It’s Pure Gould Deadstock new with tags brown tan cream argyle print sweater. Acrylic wool blend Made in America by Sidney Gould Co LTD I do not see any size on any tag or hang tag. Approximately a modern small. Please compare measurements to determine best fit Flat measurements are approximate Pit to pit 18 1/2 inches shoulder seam to hem 22 1/2 inches shoulder seam to wrist 23 inches F21-01