Information on 19.73 and 19.73N "Double Face" Chronograph | Omega Forums
Antique Longines pocket watch / chronograph, 935 silver, calibre 19.73 | #519261396
Unique Baume / Longines 0.925 Silver Pocket Chronograph Cal.19.73 ca1913 | eBay
Swiss PW - Longines 19.73N balance, ca 1928 | NAWCC Forums
Longines - The Hong Kong Watch Auc... Lot 938 November 2020 | Phillips
WEST END CHRONOGRAPHE movement by LONGINES cal 19.73 N 43 mm parts repair | WatchCharts
182 Years of The Long Meadows: A History of Longines - Worn & Wound
1929 LONGINES 19.73N Hi-Grade Chronograph Pocket Watch – empressissi
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
Longines Big Russians - The World's First Wrist Chronographs
Sold Price: Pocket watch: silver Longines chronograph with rare multi-coloured dial and counter, ca. 1915 - September 6, 0120 4:30 PM CEST
Sold Price: Pocket watch: high-quality Longines pulsometer chronograph 'Cronografo Contador' with chain and original box, delivered to Buenos Aires 1923 - October 6, 0121 4:30 PM CEST
YEAR 1923 - LONGINES CHRONOGRAPH GOLD POCKET WATCH - 19.73 - YouTube
LONGINES 19.73 N STEERING WHEEL AXLE | eBay
Longines 19.73N Pocket Chronograph - YouTube
Rewriting History – Discovering the Earliest Flyback Chronograph Wristwatch | SJX Watches
LONGINES, panel clock, Hour Angle, Siderographe, metal, 1930s. Clocks & Watches - Pocket & Stop Watches - Auctionet
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
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
Longines 19.73 Pocket watch Movement Chronograph for project or parts ... | eBay
