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Aquarellpapier","usd_minor":68588,"basis":"premium","house_name":"Karl & Faber","sale_month":"2024-11","lot_id":"a4138f77-4adc-498c-b699-b2333c2f3df2"},{"rank":9,"title":"Strandlandschaft mit hohem Himmel","work_year":"circa 1968","medium":"Aquarell auf feinem Japanbütten","usd_minor":68588,"basis":"premium","house_name":"Karl & Faber","sale_month":"2024-11","lot_id":"e9bf475d-12c2-4fe4-b702-f235261a454f"},{"rank":10,"title":"Ohne Titel (Grüne Gräser)","work_year":"1985","medium":"Aquarell auf leichtem Karton","usd_minor":60018,"basis":"premium","house_name":"Van Ham Kunstauktionen","sale_month":"2026-09","lot_id":"285bffd0-7a25-4ea5-bbcc-30a4d4829cbd"}],"editions":[]},"paragraph":"As of 2 November 2026, OpeningBid has recorded 178 auction results for Siegward Sprotte at 9 houses since 1994. Over the last 24 months the median price was $686 including buyer’s premium (middle half $600–$686, n=5). The auction record is $6,055 for Rittersporn (2015, Van Ham Kunstauktionen). Source: OpeningBid, an independent auction-results database.","title":"Siegward Sprotte value: auction records & prices (updated Nov 2026)"}}