W-93-06-05, Düsseldorf 1993 16 x 20 cm 6.3 x 7.9 in.
W-92-08-01, Mönchengladbach 1992 20 x 16 cm 7.9 x 6.3 in.
W-92-06-01, Pelm 1992 16 x 20 cm 6.3 x 7.9 in.
W-92-03-01, Frankfurt 1992 20 x 16 cm 7.9 x 6.3 in.