Benjamin Katz # ANDY WARHOL # 1989, mint
Bottrop Quadrat # James BISHOP # signed, 2007, mint
Erwin Blumenfeld ,Josef Albers Museum # LICHTSEITEN # 2002, mint
Josef Albers Museum # ANDREAS KARL SCHULZE # 2016, min t
Josef Albers Museum # FLORIS, Alfonso HUPPI, MOSSO # 1991, mint
Josef Albers Museum # FRED SANDBACK # 2014, mint
Josef Albers Museum # GEORG TAPPERT # 2002, mint
Josef Albers Museum # GIORGIO MORANDI # 2005, mint-
Josef Albers Museum # JOSEF ALBERS in BOTTROP # 2004, mint
Josef Albers Museum # KIMBER SMITH # poster ,2004, mint
Josef Albers Museum # MANFRED MOHR # original silkscreen, 1998, nm
Josef Albers Museum # NELLY RUDIN # 2001, original silkscreen, mint-
Josef Albers Museum # ROBERT ADAMS, Motel / Lakewood# 2013, Mint
Josef Albers Museum # YUJI TAKEOKA # 2011, mint
Josef Albers Museum #JOHN SZARKOWSKI # 2009, mint
Josef Albers Museum , Bottrop # ENZO MAIOLINO # original silkscreen.1997, mint-
Josef Albers Museum , Bottrop # LEO ERB # 2003, mint
Josef Albers Museum , Bottrop # SOL LEWITT, poster # 2005, mint
Josef Albers Museum / Bottrop # GLATTFELDER # silkscreen, 1992, mint--
Josef Albers museum / Quadrat Bottrop # ANTONIO CALDERARA # 2003, mint