Hello and welcome to the listing. This is one of about 100 objects that I have from my great aunts presidential papers across three administrations.Atomic bombings of Hiroshima and Nagasaki, Aug 6, 1945 – Aug 9, 1945 respectively.The surrender of Imperial Japan was announced by Japanese Emperor Hirohito on August 15 and formally signed on September 2, 1945, bringing the hostilities of World War II to a close.This signed and dated calling card: August 21, 1945.Formal authenticatio...n of the signature has not been carried out. It is authentic White House stationary, it may be a signature of an aide to the president so the price has been adjusted as necessary.Normal handling wear and slight rust marks from a paperclip. Shipped with USPS Insured and Registered.