GUYANA 1984 (MNH) 20C/15C HARPY EAGLE PLATE BLOCK WITH BLACK OVERPRINT
20c/15c Harpy Eagle plate 1A–1A–1A–1A–1A block x 8 with 'Preserving Our Heritage' overprint by Autoprint in black ink. Extremely scarce. An amazing multiple. Possibly the largest extant. Fresh and fine. Mint never hinged. SG1240; SC746a
Note: 15c Harpy Eagle originally issued 25 March 1969 as part of the Marine & Wildlife definitive series. Reissued 1 July 1981 with 'OPS' overprint as part of an official set. Further reissued 1 February 1983 with 'POSTAGE' overprint. Reissued again 5 March 1984 with 'Preserving our Heritage' overprint and '20' surcharge
