2023Jeschke Jadi Auctions Berlin GmbHHelmut Middendorf Häuserkopf. 1991. Farbserigraphie auf Velin. 106,5 x 80 cm (115 x 86 cm).See Sold Price
2024Maison Jules VeilinghuisHelmut MIDDENDORF (1953), colour lithograph Untitled, composition for the Olympic Centennial SuiteSee Sold Price
2022Toronto Book Auctions[ART-BOOKS] BOROFSKY, FETTING, JORG IMMENDORFF: FIFTEEN CATALOGUES.See Sold Price
2022Art Research ParisHELMUT MIDDENDORF (NÉ EN 1953) Sans Titre 1991 Acrylique sur carton marouflée sur toile,See Sold Price