Baume & Mercier Riviera Perpetual Calendar Chronograph watch in 18K yellow gold with diamond-set bezel, ref. 0114012080 / 1830608 – Full Set (Box and Papers, 1995). Housed in a 38mm twelve-sided case crafted from solid 18K yellow gold, this rare Riviera model features a distinctive bezel set with round brilliant-cut diamonds and a fluted caseback signed Baume & Mercier Genève. Beneath a flat sapphire crystal lies a white dial symmetrically laid out with four subdials for the perpetual calendar and chronograph functions: day of the week, month, date, and a moonphase display at 6 o’clock. Gold baton indices and baton hands complete the elegant composition. Powered by a quartz movement with perpetual calendar and chronograph complications, offering high-horology complications with peace of mind. Fitted with its original brown alligator leather strap, secured by a matching 18K yellow gold pin buckle signed Baume & Mercier.