This collaborative artist's book, published by Éditions Claude Givaudan in Paris, represents one of only six special collaborator's copies from a total edition of 606, bearing Duchamp's signature alongside that of the author and the handwritten annotation "ECG" in ink. The work exemplifies Duchamp's engagement with the concept of ephemeral and intangible imagery, as suggested by the evocative title referencing transparent shadows. Housed in its original black cardboard slipcase, this rare volume stands as a testament to the intimate intersection of fine art publishing and Duchamp's enduring conceptual legacy.