The product is a collection of 22 books titled "First Days - Journal Of American First Day Covers" from the years 1992, 1993, 1994, and 1995. Each book likely contains a variety of first day covers featuring stamps from the United States. These covers are described as ungraded and uncertified, making them ideal for collectors looking to explore and document American first day covers from the early 1990s. This collection provides a comprehensive look at the history and artistry of American stamps through the lens of first day covers.