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Continue to ChatOuter Island Agents 1971 12½p Local Post (Emergency Strike Post) - Black and Red (U/M) https://www.grahamlandstamps.co.uk/shop/stamps/cinderellas/gb-strike-posts/outer-island-agents/outer-island-agents-1971-12%c2%bdp-local-post-emergency-strike-post-black-and-red-u-m/