A.S. & F. ("Armand Schwob & Frère"), La Chaux de Fonds, "Mystérieuse", Brevete S.G.D.G., Movement No. 3900, Case No. 3726, 54 mm, 84 g, circa 1885

A gentleman's rare silver pocket watch with hands moved by rotating glass discs
Case: silver, glazed on both sides, decorated. Dial: rotating glass discs with applied spade hands, radial Roman numerals. Movm.: crescent-shaped movement, frosted, gilt, "H. R. Brevete", cylinder escapement, ring balance.