{"slug":"william-sidney-cooper","artist_id":"b8afd970-7ecf-48bf-b217-09a56dc87cef","canonical_slug":"william-sidney-cooper","name":"William Sidney Cooper","built_at":"2026-11-03","categories":[{"bucket":"Paintings","lots_n":14,"sold_n":14,"median_price_usd_minor":147480,"record_price_usd_minor":862500,"record_basis":"premium","priced_lots_hammer_only":3,"priced_lots_unverified":3,"sell_through_pct":null,"last_sale_date":"2026-09-16","first_sale_year":1997},{"bucket":"Works on Paper","lots_n":15,"sold_n":12,"median_price_usd_minor":34406,"record_price_usd_minor":190548,"record_basis":"premium","priced_lots_hammer_only":0,"priced_lots_unverified":7,"sell_through_pct":80.0,"last_sale_date":"2024-08-07","first_sale_year":2007},{"bucket":"Other","lots_n":1,"sold_n":1,"median_price_usd_minor":167783,"record_price_usd_minor":167783,"record_basis":"premium","priced_lots_hammer_only":0,"priced_lots_unverified":0,"sell_through_pct":null,"last_sale_date":"2019-03-20","first_sale_year":2019}],"sizes":[{"bucket":"Paintings","size_bucket":"medium","lots_n":8,"sold_n":8,"median_price_usd_minor":125156,"p25_price_usd_minor":67524,"p75_price_usd_minor":172754,"record_price_usd_minor":608021,"record_basis":"unverified","priced_lots_hammer_only":2,"priced_lots_unverified":3,"last_sale_date":"2026-09-16"},{"bucket":"Works on Paper","size_bucket":"small","lots_n":13,"sold_n":10,"median_price_usd_minor":38810,"p25_price_usd_minor":29773,"p75_price_usd_minor":51252,"record_price_usd_minor":190548,"record_basis":"premium","priced_lots_hammer_only":0,"priced_lots_unverified":7,"last_sale_date":"2024-08-07"}],"notable":[{"bucket":"Paintings","year":"1999","total_price_usd":862500,"priced_basis":"premium"},{"bucket":"Paintings","year":"2013","total_price_usd":608021,"priced_basis":"unverified"},{"bucket":"Works on Paper","year":"2015","total_price_usd":190548,"priced_basis":"premium"},{"bucket":"Works on Paper","year":"2011","total_price_usd":122821,"priced_basis":"premium"}],"last_sold":{"year":"2026","total_price_usd":163623,"priced_basis":"premium"},"upcoming_count":0,"content_modified":"2026-10-29","value_block_hash":"979e645e29752ee7aa6f039e9f801a598a990647"}