US868P1 10c James W. Riley Large Die Proof in Brown on India

1940 #868P1 10¢ Riley, F-VF die proof on India, die sunk on card, crisply printed with strong color, India on oversized sink showing plate nails, on 136 x 178 mm hole-punched card; blue control number 621267A and "Engraver's Stock Proof/Authorized by" handstamps; two small punches through "0"s of denomination; India lightly wrinkled when adhered to card (only at horizontal center; top and bottom loose), stains at front right, Fine to Very Fine+, an uncommon find. cv $1,500.