Butterick 3763 vintage sewing pattern, dated 1970s.
Misses' Dress, Top & Pants.
Loose-fitting A-line dress or top with side slits has applied front detailing with neckline split, pointed collar, dropped shoulders, wide sleeves with turned-back cuffs, and topstitch trim. Self tie or purchased belt. Straight-legged pants darted into waistband have back zipper closing.
Size 12:
Bust 34 inches / 87 cm
Waist 26 1/2 inches / 67 cm
Hip 36 inches / 92 cm
Pattern is uncut and factory folded. Envelope is intact, with paper spotting down one side.
More '70s patterns here:
http://allthepreciousthings.com/collections/1970s