Sterling Silver, Hardened (for wartime use). Case and movement triple marked Longine EF Co. Case and movement date to 1915. Oversized W: 35 WWith:37 L 39. Dial is in incredible condition-no fissures, cracks or chips!! Highly original item which has not been restored or polished-perfect for collectors. The watch case is low grade sterling silver and was purposely produced that way to harden the silver made for wartime use. 7 or 70% silver as silver is otherwise too soft for battlefield conditions. Here's a video of the movement-which runs perfectly-all you can do is marvel at the movement and maker from 100 years ago! The item "Antique WW1 Silver Longine Trench watch oversized 1915" is in sale since Wednesday, June 17, 2015. This item is in the category "Jewellery & Watches\Watches\Wristwatches". The seller is "bubsbike" and is located in London. This item can be shipped worldwide.