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-seconds chronograph.
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.