Joe tilson four elements mudra (1972) original screenprint with collages on j green paper signed in pencil and justified in 90 proofs dimensions of the board: approximately 50.5 x 60.5 centimeters untrimmed sheet slight right angle crease marlborough graphics london kelpra studio london bibliography catalog raisonné p 105 this piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution less