Stampdesc Spanish Guinea, type=revenue-50c-blgrn

desc_issuer: Spanish Guinea
desc_function: revenue
desc_denom: 50c
desc_color: blgrn

Used by 1 overprinted stamp:
Spanish Guinea postage 1909 10c blgrn issue=1909b oc=blk on=type=revenue-50c-blgrn

Description does not match any stamp types!