The winder is the original slim steel winder and the watch winds well and hand sets as it should and although not extensiveley serviced its keeping within 2/3 minutes a day so after a minor service it will be a great watch to use and enjoy. Overall a great original watch but as ArtDeco as you will ever find and 100% original. Size: approx 4.4 cm across. Please look at the images closely as they represent an important part of the description, thanks.The item "Original Steel 1930's Art Deco Jaeger-LeCoultre open faced Gent's Pocket watch" is in sale since Saturday, July 4, 2020. This item is in the category "Jewellery & Watches\Watches, Parts & Accessories\Watches\Pocket Watches". The seller is "established1923" and is located in cheshire, england. This item can be shipped worldwide.