Jopie Koopman (1910-1979) remains a cherished figure in Dutch cinema, particularly noted for her captivating performances in the post-war era. Her most prominent film, "But Not in Vain" (1948), showcases her exceptional talent, blending her skills as an actress and singer. This film is not only a beloved classic in the Netherlands but also a significant piece of film history, capturing the essence of Dutch culture in a time of rebuilding. Collectors are drawn to Koopman's work for its nostalgic value and the impact it had on the evolution of Dutch film. The rarity of "But Not in Vain" on physical media makes it a sought-after item for enthusiasts keen to explore the depth of mid-20th-century European cinema. As a pioneer in variété, Koopman's influence extends beyond acting, making her films essential additions to any serious collector's library, especially those focused on the rich tapestry of international film history.