Four monoprints in colours from professionally made end-grain block of Florida boxwood, on Japan paper, with full margins,

circa 1969

two vertical I. 30.5 x 23.6 cm (12 x 9 1/4 in.)
two horizontal I. 30.4 x 35.4 cm (11 7/8 x 13 7/8 in.)
all S. various sizes

all signed in either pencil or black ink, Opus 8 (red version) inscribed 'Opus no.8' in pencil, and Opus 8 (blue version) inscribed 'Proof NG' in pencil, all in very good condition, all framed.