Simplicity 3176 vintage sewing pattern, dated ca 1959.

Girl's Dress with Two Skirts, Detachable collars and Belt:

"Simple to make" dresses have set-in sleeves, wide self belt and contrasting detachable collars. V1 features slim skirt with pockets and back kick pleat. Sleeves have tab and button trim. V 2 features gathered, 4 gore skirt.

Size   12:

Bust   30 inches / 76 cm

Waist 25 inches / 64 cm

Hip    32.5 inches / 88 cm

Pattern is UNPRINTED, unused and factory folded. Envelope is in excellent vintage condition.

More '50s patterns here:

https://allthepreciousthings.com/collections/1950s