Butterick 2256 vintage sewing pattern, dated 1962.
Slimliner Dress(A) Slim skirted shirtdress with convertible collar, band cuffed long set in sleeves, self belt.(B)Full skirted version with inverted front pleats, above elbow cuffed sleeves.
Size 18 1/2:
Bust 39 inches / 99 cm
Waist 33 inches / 84 cm
Hip 43 inches / 109 cm
Pattern is UNCUT and factory folded. Envelope has store stamp, light spotting, tears around top end.
More '50s patterns here:
https://allthepreciousthings.com/collections/1950s