Simplicity 6107 vintage sewing pattern, dated 1973.
Simple-To-Sew Young Junior/Teens’ & Misses Overalls in Two Lengths with Detachable Bib: (Including Tissue Lesson Chart … "How-To Trim Overalls").
The long overalls V. 1 or short overalls V. 2 with turn back cuffs and back zipper have bib and suspenders buttoned to inside of waistband. V. 1 has contrasting patch pockets. V. 2 has ruffles made of embroidered eyelet edging.
Size 10:
Bust 32.5 inches / 83 cm
Waist 25 inches / 67 cm
Hip 34.5 inches / 88 cm
Pattern is cut and checked complete. Envelope is in very good vintage condition, with a store stamp on the front.
More '70s patterns here:
http://allthepreciousthings.com/collections/1970s
