Auction Preview: Watches & Clocks at Boule, Monaco, July 17

A rare and exceptional gold chronograph, black dial, 3 counters, permanent seconds, totalizers 30mn and 12h, applied baton indexes, external timer, tachymetric gold bezel Diameter 40 mm - PB 122 g A very fine & rare 3 counters, perpetual calendar, yellow gold chronograph, silver dial, outer minute-track, gold hands & applied indexes, window apertures for day & date, permanent seconds, 30mn counter, date, night & day & leap year indications, moon phase at 6.

A legendary stainless steel chronograph, white dial, red minute-track, 3 counters, permanent seconds, 30 mn & 12 h registers, luminous hands & applied indexes, bezel tachometer Diameter 37 mm - PB 109.20 g A rare & exceptional gold chronograph, black dial, 3 registers, permanent seconds, 30mn & 12h counters, applied baton indexes, outer minute-track, gold tachometer bezel.

An exceptional and rare gold chronograph with 2 counters, permanent seconds and totalizer 12h, central totalizer 60mn per red needle 3355, No 346 U.

Diam 35 mm - PB 84.50 g A very fine platinum tourbillon wristwatch, skeletonized movement, hour ring at 12, tourbillon cage & small seconds at 6 A very fine & rare stainless steel diver's wristwatch, "Double red" black dial, patinated hands & indexes, permanent center seconds, date at 3. Source