The product is an original real photo postcard featuring the Illinois Railroad Train number 66466 in Chicago, United States. The postcard captures a scene of a train and appears to be from the early 1900s. It is unposted and measures a standard size of 5.5 x 3.5 inches. The postcard falls under the themes of travel, transportation, photographs, cities & towns, making it a unique addition to any collection focusing on these subjects.