Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Brazil - 1943, Centenary of Postage stamps, 2c black and blue green, two sheet margin imperforate blocks of four, one has blue green missing (vertically folded between stamps), both printed on paper with horizontal Wavy Lines, in addition imperforate proof pair in gray color only on wove paper without watermark, no gum as produced, NH, VF, Sanabria #74 a, b, C.v. $480++ (1966), Est. $500- $600, Scott #C51 var