On 17 June 1918 August Krebs's heirs sold the Castle Mill for 48,000 paper marks or 38,400 gold marks to the Wiesbaden engineer Michael Schön and his wife Maria Susanna, "née" Zahn. They sold it again only a year later, on 25 June 1919 for 62,500 paper marks or 19,437 gold marks – and 50 Pfennigs – to the Wiesbaden master painter Karl Schmidt and his wife Luise, "née" Krüger, who provided the rather shabby building with a coat of paint, but less than a year later they sold it again, on 7 May 1920 for 180,000 paper marks or 15,822 gold marks, to the Wiesbaden court apothecary Max Holländer.