Butterick 6452 vintage sewing pattern, dated circa early 1930s.
Women's Smock
Size 16:
Bust 34 inches / 87 cm
Pattern is UNPRINTED, factory pre-cut tissue pieces with perforated symbol markings. Pattern is unused and factory folded. Envelope has shelf wear, small holes around edges and corners.
More patterns from the '20s, '30s and '40s here:
https://allthepreciousthings.com/collections/1940s
