Rewriting History – Discovering the Earliest Flyback Chronograph Wristwatch | SJX Watches
Longines Big Russians - The World's First Wrist Chronographs
Longines Chronograph Caliber 19.73N in .900 Silver Ca 1912 | Cowan's Auction House: The Midwest's Most Trusted Auction House / Antiques / Fine Art / Art Appraisals
Rare high quality LONGINES 19.73N pocket watch movement with 1920s chronograph | eBay
Cal. 19.73N Longines, 'Chronograph', case No. 2955408. Made circa 1910. Very fine and rare, early, oversized, silver wristwatch with single-button chronograph, register and enamel dial. | Important Collectors Watches, Pocket Watches &
Longines 19.73 Pocket watch Movement Chronograph for project or parts ... | eBay
Sold Price: Pocket watch: silver Longines chronograph with rare multi-coloured dial and counter, ca. 1915 - September 6, 0120 4:30 PM CEST
Longines chronograph double face 19.73N, 1930 ? help with spare balance etc. needed | WatchUSeek Watch Forums
Longines Pocket Watch Chronograph Gold 18K Cal.19.73 N Swiss Made Year 1910 | eBay
Longines - Double-faced pocket watch, chronographs, minute-recorders, calibre 19.73 N; “Anti Magnétique”; 18K yellow gold | Important Modern & Vintage Timepieces | Hong Kong, May 10,2020