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desc_issuer: Guyana desc_denom: 170c Used by 1 overprinted stamp: Guyana postage 6/30/1984 120c issue=1984 surcharges i oc=blk on=170c Matches 3 types: Guyana postage 5/17/1982 $1.70 blk<rd issue=1982 surcharges i d=++on=3c unwmk Guyana postage 9/15/1982 170c issue=1982 surcharges l oc=blk on=110c Guyana postage 4/15/1989 170c issue=Orchids - Surcharged oc=blk on=175c |