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Hong Kong BPO China SG1 1917 1c Brown Watermark Error MNH Type Hong Kong Item No. sthongkong000074 Description Hong Kong British Post Offices in China SG1 1917 1c Brown in unmounted mint condition with full yellow gum. Watermark shows offset to left on back from back of stamp with a single Crown C reversed (no A). Unlisted, this issue should have a multiple Crown block CA watermark. Condition Unmounted Mint Price £ 500.00 Postage £ 1.55 Large Letter Total To Pay £ 501.55 Multiple Purchases? Use CONTACT to send us the Item Numbers you require and we will return a quote with reduced postage. Europe or World customer? Use CONTACT to send us the Item Numbers you require and we will return a postage quote.