The product is a collection of Czech stamps from the years 1918-1920 featuring Hradcany Castle. These stamps were issued during the time period of 1911-1920 in the Czech Republic and Czechoslovakia. They are of used quality, handstamped cancellation type, and uncertified certification. These stamps offer a glimpse into the history and culture of the Czech region during the early 20th century, making them a valuable addition to any stamp collection focusing on European postal history.