Russian aristocrat (1887–1967) best known for participating in the strange and storied assassination of Grigori Rasputin. Signed book: En Exil. Paris: Plon, 1954. Softcover, 5.75 x 8, 253 pages. Signed and inscribed on the first free end page in black ink, and dated 1954. Overall brittle toning and slight feathering to ink in the signature, otherwise fine condition. RR Auction COA.