Robert Hartberg is a notable figure in the realm of classic cinema, particularly celebrated for his role in the silent film era. His most recognized work, *Die rote Maus* (1926), remains a cornerstone for collectors of vintage film. This film not only showcases Hartberg’s compelling performance but also serves as a significant artifact of German expressionist cinema, making it a sought-after item for aficionados of film history. Collectors are particularly drawn to Hartberg’s films due to their rarity and historical significance. *Die rote Maus*, with its unique narrative style and visual artistry, is often highlighted in discussions about silent film aesthetics. Its limited availability on physical media, especially in restored formats, adds to the allure for dedicated collectors looking to preserve and celebrate the evolution of film. Hartberg's contributions to early cinema continue to resonate, underscoring the importance of preserving these classic works in physical media collections.