 By 1916, the ceramic pieces he had collected would no longer fit in his home.He decided to sell part of his collection to the Peruvian government for 60,000 Soles.They were put on display in 1924 and he was named the museum's first director (with a salary of four Soles per month), but his tenure was short because he was in poor health, which prompted him to return to Germany for good in 1925.