Von Le Coq was heir to a sizable fortune derived from breweries and wineries scattered throughout Central and Eastern Europe, thus allowing him the luxury of travel and study at his leisure.
Serving as assistant to the head of the museum, Professor Albert Grünwedel, Le Coq helped plan and organize expeditions into the regions of western Asia, specifically areas near the Silk Road such as Gaochang.
Le Coq said that the depictions of figures with apparently blue eyes, red hair and cruciform swords resembled Frankish art: "Such more striking are representations of red-haired, blue-eyed men with faces of a pronounced European type.
"[6] With the help of Theodor Bartus and his other assistants, Le Coq carved and sawed away over 360 kilograms (or 305 cases) of artifacts, wall-carvings, and precious icons, which were subsequently shipped to the museum.
In Buried Treasures ..., Le Coq defends these "borrowings" as a matter of necessity, citing the turbulent nature of Chinese Turkestan at the time of the expeditions.
The artifacts were put on display at the museum and were open to the public until 1944 when the relics were destroyed in British bombing raids during World War II.