Make no mistake, this is a very rare Longines! It's one of the first wristwatches from 1915 but this one has an oversize case measuring 40mm without the crown. These were mostly delivered to Russia and are called SCHWOB, the name of the distributor at that time. It's super high quality, all steel and with double caseback protecting the movement. It even has a lovely Longines engraving inside. The watch is mint throughout with perfect enamel dial and blued hands. Movement is cal. 15.26 which has been serviced and is running perfectly. Attaches is a period style green strap and it comes with the Longines extract. Rare size and quality!!!