The shirt is styled with a double yoke, encased seams and a six-button front closing. The back is gathered to the yoke seam and short openings at the lower edge of the side seams finish the shirt..." I've included a scan of the back of the envelope so you can see all the details.
Size Small Neck: 14-14.5 Chest: 34-36
Complete with 10 peices & instructions.
Top flap is missing, several tiny tears, age-toned paper.