Assertion: art movement's work | /r/HasProperty | connected to postal medium.[citation
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text: Other Fluxus artists have been involved since the early 1960s in the creation of artist's postage stamps (Robert Watts, Stamp Dispenser, 1963), postcards (Ben Vautier, The Postman's Choice, 1965: a postcard with a different address on each side) and other works connected to the postal medium.[citation needed]