Golden Cartouches are a form of currency used in the Land of the Dead expansion pack. They're the third rarest Nehekharan artifacts in the Warhammer world, followed by Silver Ahnks.
There are two ways to obtain Sacred Funerary Masks;
- Converting 1 Sacred Funerary Mask into 5 Golden Cartouches
- Massive Loot Bag from the first to the seventh boss kill PQs