Wikipedia offers this:  “Hiroshima Electric Railway Co., Ltd. (広島電鉄株式会社, Hiroshima Dentetsu Kabushiki-gaisha) is a Japanese transportation company established on June 18, 1910, that operates streetcars and buses in and around Hiroshima Prefecture. It is known as ‘Hiroden’ (広電) for short.  The company’s rolling stock includes an eclectic range of trams manufactured from across Japan and Europe, earning it the nickname ‘The Moving Streetcar Museum’.”  As a side note, San Francisco’s system has a similar reputation.  Card mailed in 2016 with four stamps and two postmarks, and there’s a sort of map of the stops on the address side of the card.  Grade: 1