A Guide to Collecting Early and WW1 Trench Watches: The Birth of the Wristwatch and its Baptism in WW1 - Kindle edition by Haynes, Ian, Marriott Smith, Richard. Reference Kindle eBooks @
Value Proposition - Introducing Vario WW1 Trench Watch (Specs & Price)
Trench watch - Wikipedia
Value Proposition - Introducing Vario WW1 Trench Watch (Specs & Price)
Watches After WWI: the Male Accessory
WALTHAM WW1 Historical Military Trench Watch - Ashton-Blakey Vintage Watches
Just Because: The Ironic Elegance Of Trench Watches - Hodinkee
WW1 MENS TRENCH WATCH STYLE ARMY MILITARY WRISTWATCH ANTIQUE VINTAGE | eBay