A major work by Edward Munch (no, not that one,) is being offered for sale in an online auction based in Denmark. But Munch authorities in Norway are questioning the auction house’s claims that the lithograph in question was actually hand-colored by the artist himself. The piece has been appraised at over $100,000, and as a whole is unquestionably authentic, but much of its value is dependant on whether Munch can be verified as the individual who filled in the color.