The product is a set of two original postcards featuring an S.S. Christopher Columbus ship excursion steamer. These postcards are from the era of divided back (1907-1915) and were manufactured in the United States during the early 1900s. The postcards measure a standard size (5.5 x 3.5 inches) and were posted in 1911. The theme of the postcards is transportation, specifically related to ships and steamships, making them a unique addition to any collection of vintage postcards or maritime memorabilia.