New, unopened stamps purchased during my study abroad in the United States. This is a stamp series released in 1999 by the United States Postal Service, commemorating the events of the 20th century, decade by decade. Each sheet features 15 iconic images representing that era. The series consists of stamp designs with 15 stamps each, and the items for sale are the 1900s and 1910s sheets. Perfect for collectors or as interior decoration. *As shown in photo 4, there are two small holes in the plastic at the top. I will ship promptly and pack carefully, and I will handle the transaction with sincerity until it is complete. Thank you for your consideration.