Lümplein von Basel. 1977. Ball point pen, felt tip pen and stamp over Assemblage of feather, tape and decorative pictures on front side of a folded paper envelope. Mounted on a printed cloth tissue. Fixated in shadow gap mount. Signed, dated "14. Juni 1977", titled, dedicated and inscribed. Monogrammed, with date "16. Sept. 1977" and inscription on inside of envelope. Ca. 31,5 x 31 x 1 cm (12,4 x 12,2 x 0,3 in). [KP].