1984 BUTTERFLIES: Wonderful range of IMPERF PROGRESSIVE PROOFS all in blocks of four. Only the 1s & 2s incomplete otherwise complete with all values to the 5m. F-VF/M/UM, generally VF, odd minor imperfection. Amazing comprehensive assembly of the 34 proofs reflecting the various colour separations and complete designs. Most attractive. See scans for detail as to content. (SG 563-578).
