This booklet commemorates the 50th anniversary of the opening of the Tokyo Metro, featuring numerous historical photos and maps. - Title: 50 Years of the Subway - Content: Commemorative booklet for the 50th anniversary of the Tokyo Metro - Visuals: Includes historical photos and maps. Three types of tickets commemorating the 80th anniversary of the opening of the Diet: * 30-yen section from Kokkai-gijidomae Station * 40-yen section from Kokkai-gijidomae Station * 50-yen section from Kokkai-gijidomae Station And four commemorative tickets in total, including the 60-yen section from Nijubashi Station for the 50th anniversary of the Emperor's reign. The three tickets were issued in 1970, and the Emperor's reign ticket was issued in 1976. As many years have passed, they may be quite valuable now. ^_^ Thank you for viewing.