Mixed lot of 10 prints by different artists 2nd half 20th century, Hannes Postma (*1933), ''reservaat A'', lithogr., 1968, Gerd Winner (*1936), Lokomotive VII, color serigraphy, unsigned proof, minimally unfr., Werner Büttner (*1954), 3 linocuts in black and yellow on strong wove paper (papier vélin), Bernhard Johannes Blume (1937-2011), four offsets from the series ''Natürlich'', 1985, signed by hand, as well as a composition in yellow tones by an unidentified artist, sheet dimensions up to 76 x 63 cm