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All handstamps must be returned to the purchasing office (district or host Post Office) no later than 65 days after the close of the event, by which time all requests for replacement of pictorial postmarks are to be handled (see chapter 12). The purchasing office must retain the handstamp for 6 months. Afterwards, the handstamp must be defaced or destroyed unless a request has been made to retain the handstamp for display purposes only (see chapter 8).
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