This is a set of over 500 different commemorative special stamps issued during the Showa, Heisei, and Reiwa eras. The set includes over 500 stamps. The postmarks vary, including round stamps, machine cancels, roller cancels, and various types of "Benno" (postage paid) stamps (bar-shaped, wave-shaped, etc.). Extra stamps are included to account for any counting errors. Please refer to the images for details.