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paper","usd_minor":3083462,"basis":"premium","house_name":"Christie's","sale_month":"2007-12","lot_id":"4bfaae76-06fd-46ab-84eb-754519cefaee"}],"editions":[]},"paragraph":"As of 3 November 2026, OpeningBid has recorded 210 auction results for John Sell Cotman at 25 houses since 2000. Over the last 24 months the median price was $231 including buyer’s premium (middle half $149–$1,033, n=25). The auction record is $439,256 for Part of the Refectory of Walsingham Abbey, Norfolk (2016, Bonhams). Source: OpeningBid, an independent auction-results database.","title":"John Sell Cotman value: auction records & prices (updated Nov 2026)"}}