W-91-04-04, Reutlingen 1991 38 x 28 cm 15.0 x 11.0 in.
W-91-05-01, Düsseldorf 1991 28 x 38 cm 11.0 x 15.0 in.
P-91-06-05, Köln 1991 37 x 48 cm 14.6 x 18.9 in.
8684, 1995 90 x 130 cm 35.4 x 51.2 in.