McCall's pattern #4246 for a girl's jacket, blouse, and jumper in Size 7. Classic pleated skirt with hip length jacket. 23 pieces. Published in 1957. It appears that all the pieces are here and is at least partially neatly cut. Envelope is in overall good shape, with a little tearing on the tab. In very politically incorrect 50's fashion you may get a chuckle (or not) out of the "not suitable for chubby girls" disclaimer on this pattern. Go figure.
If you have any questions on sizing or the amount of fabric required, please feel free to ask. Happy to assist. If upon arrival, you find that any pieces are missing, please notify me with 7 days so I may address the situation. Some of these patterns have a lot of little pieces. Happy creating!