Butterick 7499 vintage sewing pattern, dated circa 1950s.
Girls Dress, Full Skirt:
A: Contrast Puritan Collar and contrast cuffs on below-elbow sleeves; full skirt with patch pockets. B: Short-sleeved version with contrast bodice, collar and cuffs to match skirt. C: all in one fabric.
Breast 24 inches / 61 cm
Pattern is unprinted (perforated with symbols), and is checked complete, except for pocket piece (rectangle), which is MISSING. Pattern envelope has paper yellowing and store stamp.
More children's patterns here: