Proof Block of Four 6d. grey block of four with sheet margin at top, each overprinted "SPECIMEN." in green vertically, fine | Christie's

Lot 147

147

Proof Block of Four 6d. grey block of four with sheet margin at top, each overprinted "SPECIMEN." in green vertically, fine

Details

Proof Block of Four 6d. grey block of four with sheet margin at top, each overprinted "SPECIMEN." in green vertically, fine

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