15 x 10.5cm, 2pp original hand-drawn postcard with a drawing of sky/horizons and clouds in blue, black and green felttipped pen.

On the reverse is a long handwritten note listing all the artists "who have made a portrait of Robin Crozier" which includes most of the Fluxus crowd and many others. VG+. Unique mail art. Signed on the front bottom right in black ink by Crozier.

10.5 X 15cm, 2pp original hand-drawn postcard with an image of a thought bubble becoming a bomb with a "Boom".

Unique mail art. Signed on the front bottom right in ink by the Fluxus artist.

JOINT:

Hand addressed (by Crozier) envelope for Tjeed Deelstra with Crozier's return address on the reverse. Neatly opened.

15 x 10.5cm, 2pp original hand-drawn postcard with an image of a boat sailing past an island - once with fish and once with birds - the latter become waves in the lower drawing.

On the reverse is a long handwritten note asking Tjeed Deelstra if he can send his contribution to "Portrait of Robin Crozier" and letting the former know of the opening of the exhibition in January on the date which Robert Filliou designated as art's birthday". VG+. Unique mail art. Signed on both sides in ink.