Rolex Datejust ref. 6827/8 Blue Sigma Dial in 18k Yellow Gold 31mmThe Rolex Datejust 31 ref. 6827 is a vintage midsize watch, produced in the 1970s and early 1980s, and appreciated for its 31 mm case that bridges the gap between lady sized and standard mens watches. This particular example features an 18k yellow gold case fitted with a nicely defined fluted bezel, paired beautifully with a soleil finished blue dial. The dial is especially attractive, with elegant stick markers, gilt printing, and a Sigma designation