The product is a block of four used US postage stamps from 1930, featuring a 2-cent denomination with a Chicago postmark. The stamps originate from the United States and are in fine/very fine condition. They showcase a historical event related to Braddock's Field and Monongahela in Illinois. The cancellation type is handstamped, adding to the collectible value of the stamps. This unique piece of postal history offers a glimpse into the historical events of the time period.