Butterick 3865 vintage sewing pattern, dated circa 1960s.
Misses' One Piece Smock Dress.
High yoked, smock-dress with wide jewel neckline, patch pockets. A: three-quarter length sleeves, bias yoke and pockets, top stitch trim. B: short sleeves, eyelet ruffle trim, yoke and pockets cut on the crosswise grain.
Bust 34 inches / 87 cm
Waist 26 inches / 66 cm
Hip 36 inches / 92 cm
Pattern is UNPRINTED and checked complete, looks to be factory folded. Envelope is in good vintage condition, with some edge spotting and a pen mark on the front.
More '60s patterns here: