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| 1912-24 1d & 11/2d ROYAL CYPHER WMK. A superb used block of four of each valuue cancelled by the 'BRITISH POST OFFICE CONSTANTINOPLE' CDS'S for 1920 & 21. SG 357-64 |
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| 1912-24 1d & 11/2d ROYAL CYPHER WMK. A superb used block of four of each valuue cancelled by the 'BRITISH POST OFFICE CONSTANTINOPLE' CDS'S for 1920 & 21. SG 357-64 |