Back-of-Book (BOB) stamps in the United States refer to a category of postage stamps that fall outside the traditional or regular postage issues. These stamps serve specific purposes and are often associated with special services or fees. The United States has issued various types of BOB stamps over the years, and they are listed in the Scott Catalog under specific prefixes. Here are some of the major types of BOB stamps in the United States:
Revenue stamps, often overlooked in philatelic circles, play a crucial role in understanding the economic and fiscal policies of the nation. The article provides a comprehensive overview of the evolution of revenue stamps, their various uses, and their impact on the financial landscape of the United States.