{"slug":"willem-johannes-martens","artist_id":"99169338-e8d4-404a-9a41-2de3319667c9","canonical_slug":"willem-johannes-martens","name":"Willem Johannes Martens","built_at":"2026-11-01","categories":[{"bucket":"Paintings","lots_n":1,"sold_n":1,"median_price_usd_minor":1205628,"record_price_usd_minor":1205628,"record_basis":"premium","priced_lots_hammer_only":0,"priced_lots_unverified":0,"sell_through_pct":null,"last_sale_date":"2002-11-21","first_sale_year":2002},{"bucket":"Works on Paper","lots_n":2,"sold_n":2,"median_price_usd_minor":237960,"record_price_usd_minor":446720,"record_basis":"premium","priced_lots_hammer_only":0,"priced_lots_unverified":0,"sell_through_pct":null,"last_sale_date":"2016-05-24","first_sale_year":2000},{"bucket":"Prints & Editions","lots_n":1,"sold_n":0,"median_price_usd_minor":null,"record_price_usd_minor":null,"record_basis":null,"priced_lots_hammer_only":0,"priced_lots_unverified":0,"sell_through_pct":0.0,"last_sale_date":null,"first_sale_year":2022}],"sizes":[],"notable":[{"bucket":"Paintings","year":"2002","total_price_usd":1205628,"priced_basis":"premium"},{"bucket":"Works on Paper","year":"2016","total_price_usd":446720,"priced_basis":"premium"},{"bucket":"Works on Paper","year":"2000","total_price_usd":29200,"priced_basis":"premium"}],"last_sold":{"year":"2016","total_price_usd":446720,"priced_basis":"premium"},"upcoming_count":0,"content_modified":"2026-10-22","value_block_hash":"dc3fb556d922eef9b01aa1079c9914316095802d"}