TIFFANY & CO. SPLIT-SECONDS CHRONOGRAPH YELLOW GOLD
Tiffany & Co., No. 7540. Made circa 1910.
Very fine and rare, 18K yellow gold, keyless, pocket watch with split-
Four-body, "bassine," split-second chronograph push-button at 11
o'clock, hinged gold cuvette, case back centered by an engraved crest.
White enamel with black Breguet numerals, outer 1/5th seconds track
with 5-second red Arabic markers, sunk subsidiary seconds dial. Blued
steel spade hands.
Cal. 40 mm.(16 1/2```), nickel, bar caliber, 21 jewels, straight-line
calibrated lever escapement, cut bimetallic compensation balance with
Breguet balance spring, swan-neck micrometer regulator.