The product is a set of two 1950s-60s SS Delta Queen & SS Rotterdam postcards featuring passenger ships' interiors. Each postcard measures a standard size of 5.5 x 3.5 inches and is made of cardboard. The originals were manufactured in the 1950s in Rotterdam, with one postcard stamped and featuring divided backs. The postcards depict nautical and transportation themes, showcasing ship interiors from both North America and Europe, specifically the U.S. and Netherlands. They are real photo postcards (RPPC) providing a glimpse into the luxurious interiors of these iconic passenger ships during the mid-20th century.