Klaus Groh, Robert Rehfeldt
Mail Art, 1975
collaborative collage on print with handwriting, sticker and stamps as postcard, originally sent from Oldenburg and addressed to Galeria Teatru Studio resp. gallery, theatre and studio Mon. A. Ekwinski in the Palace of Culture and Science Warsaw, Poland
11.2 × 15.9 cm (4 ⅜ × 6 ¼ inches)
The Mail Art Archive of Ruth Wolf-Rehfeldt and Robert Rehfeldt*