Air Mail Proof -- four examples on "SG" watermarked paper (c. 60x50mm.) in orange and brown, black and brown, orange and black, and brown and red. Photo for one | Christie's

Lot 1145

1145

Air Mail Proof -- four examples on "SG" watermarked paper (c. 60x50mm.) in orange and brown, black and brown, orange and black, and brown and red. Photo for one

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Air Mail Proof -- four examples on "SG" watermarked paper (c. 60x50mm.) in orange and brown, black and brown, orange and black, and brown and red. Photo for one