Accompanied by a Rolex 18k gold deployant clasp.
Reference 8171 was produced in small series between 1949 and 1952, available in stainless steel, pink and yellow gold.
Rolex has produced only two different models of moon-phase wristwatches, reference 8171 and 6062 (see lot 3560). Both models are automatic, with differences in the Oyster case of reference 6062, featuring a screw-down water-resistant-type case back.
Reference 8171 is illustrated in The Best of Time - Rolex Wristwatches by James M. Dowling & Jeffrey P. Hess, p. 209.