Check out the hemline! A-line silhouette with pleated lace trim hem, pull on with elastic waist (amazing no dry rot considering age!). Now, it appears sides were split apart then repaired, one discoloration that is smaller than a pencil eraser, minimal picking. No dry rot in elastic. No tag size, estimate of modern L/XL based on actual measurements.

Measurements flat:

waist: 12.5-18"

hip: 26"

length: 26"

This item is sold from an excellent, highly rated vintage boutique in El Cajon, CA.