Bidspirit auction | Guinea 1879-82 Crown, Cape Verde

Guinea 1879-82 Crown, Cape Verde stamps with overprinted Guinea SMALL - NOT ISSUED. Stamp Mf#9, 300 reis blue, chocolate, smooth thin paper and 12 3/4 notch. Used stamp, with concentric circles postmark, with irregular notch, usual in this issue. Portucale Philatelicus Certificate.