In the Spirt of Fluxus : Stamps by Robert Watts
Minneapolis/New York, USA: Walker Art Center / Robert Watts Studio Archive, 1993
4.6 x 2.6 cm.
Edition size unknown
The Walker Art Centre 1993 exhibition In the Spirit of Fluxus featured a vintage stamp vending machine from which visitors could purchase facsimiles of Robert Watts' Fluxus stamps.
This set of three stamps is available from Specific Object, here, for $75 US.