NECESSARY PROTECTION. 5. (brushpoint, t.r.); NECESSARY PROTECTION IN A NORTH OTAGO LANDSCAPE (brushpoint, b.l.-b.c.); COLIN McCAHON. MAY-JULY '71 (brushpoint, b.c.-b.r.); Necessary Protection No 5 (on reverse); CAT 30 DAWSONS GALLERY (on reverse, in another's hand)