FIRTH-SMITH, John (b.1943) (3) 'Two Times,' 1981 (ed. 21/25); 'Three Times (Second State),' 1981 (ed. 16/19); & 'Four Times,' 1981 (ed. 4/25). Aquatint (3) 22.5x45cm each (image) Estimate $600-1,000