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Over the last 24 months the median price was $1,395 including buyer’s premium (middle half $489–$3,335, n=6). The auction record is $23,869 for Pour un hommage à Michel-Ange II (2025, Osenat). Source: OpeningBid, an independent auction-results database.","title":"Gaston Bertrand value: auction records & prices (updated Nov 2026)"}}