The Brazilian issue with ‘Karimbada’ cover featuring works by Paulo Brusckzy, Leonhard Frank Duch, Unhandeijara Lisboa, and J. Medeiros, Rubber is a monthly bulletin dedicated to art stamps and the artists who make them, produced at Stempelplaats in Amsterdam, loose folded sheets (23,5 x 16 cm folded), 16 not numbered pages, Amsterdam 1979
