Agnes Martin # the ISLANDS# original silkscreened poster, 2004, mint-
Bottrop Quadrat # James BISHOP # signed, 2007, mint
Bottrop# VORDEMBERGE-GILDEWART#+ 3 orig silk, 1980,nm
Josef Albers Museum # MANFRED MOHR # original silkscreen, 1998, nm
Josef albers Museum, Quadrat Bottrop # JERRY ZENIUK # signed, 2016, mint
Josel Albers Museum/ Quadrat Bottrop # original silkscreened print WALTER LEBLANC # 1989, mint-
Quadrat Bottrop # DORA MAURER # original silkscreen # 1998, mint