McCall's 4294 ©1957, Misses' Dress in Two Lengths. Features a sweetheart neckline, low, U-shaped back neckline, sash, princess seams, and featherboning.
This hard to find pattern has never been used and is uncut, in original factory folds with the direction sheet.
It was featured in McCall's Magazine, December 1957. See the second picture.
Envelope has corner wear from decades of storage. Store stamp on front. Shipping includes insurance.