SOLOMON ISLANDS 1975 2C RIVER KINGFISHER IMPERF PROOF IN THREE COLOURS ONLY
2c River Kingfisher imperforate proof, printed in three colours rather than four of issued stamps resulting in notable shade differences, mounted on Questa presentation card. Very scarce. Generally fine. SG268var; SC281var
Note: the proof lacks yellow (being printed in cyan, magenta and black only) causing the apparent loss of green and the bird's breast feathers appearing in dull brown rather than reddish brown
