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When do old stamps expire? Date non-barcode stamps are invalid in 2023 and how to swap them with Royal Mail
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Royal Mail urges customers to check their stamps as millions set to be unusable in six months - Chronicle Live
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Can I use old stamps? How long you can use non-barcode Royal Mail stamps as King Charles designs rolled out
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When do old stamps expire? How long you can use non-barcode stamps and how to exchange them with Royal Mail
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