The product is a vintage Butterick pattern from the 1920s, specifically the New Deltor 5979 for a 3-piece skirt in sizes 15-18. This antique original sewing pattern was manufactured in the United States by Butterick, known for their high-quality patterns during this time period. Perfect for collectors or those interested in historical sewing, this pattern offers a glimpse into the fashion trends and craftsmanship of the early 20th century.