McCall's 3134 vintage sewing pattern, dated 1970.
Half Size Dress:
Back zippered dress has front neck vent. A has button trim. B has purchased belt. C has self fabric tie belt, scallop trimming. D has patch pockets.
Size 16 1/2:
Bust 99 cm ( 39 inches)
Waist 81 cm ( 32 inches)
Hip 104 cm ( 41 inches).
Pattern is partly cut and checked complete. Envelope has a store stamp, some staining, flap has been removed.
More '70s patterns here:
http://allthepreciousthings.com/collections/1970s