LENK, Thomas (1933-2014). No title. (1969). Silkcreen print in black and silver. 600 x 600 mm. Signed, dated & numb. (II) in pencil. -- Id. No title. (1970). Silkscreen print in black and silver. 760 x 560 mm. Signed, dated & numb. (148/190) in pencil. -- (2).