Proof Three engraved head proofs in green on piece of thin card (42 x 48mm.) marked "B.C.27" and "FROM R. 3281" in red ink, apparently progressive, one without background and scarcely shaded, the other two with oval backgrounds showing different degrees of shading. Unique. Photo

细节
Proof Three engraved head proofs in green on piece of thin card (42 x 48mm.) marked "B.C.27" and "FROM R. 3281" in red ink, apparently progressive, one without background and scarcely shaded, the other two with oval backgrounds showing different degrees of shading. Unique. Photo
来源
Dr Dudley Stone
J.M. Perkin, 1949