No. 508 - arriving mail art "Ein Turm für Ritter" from Gunter Schwind - arttower (Germany)

No. 508 - arriving mail art "Ein Turm für Ritter" from Gunter Schwind - arttower (Germany) - a decorated envelope with lots of Bismarck stickers in pop art style. Inside more stickers for use. Thank you very much.
see his blog: http://arttowersmailart.blogspot.com/