Elly Watch Co. / Prima. This is a classic example of a Swiss military or civilian mechanical watch from around the 1940s. But its calibre has been changet once in her life so now she is beating on B 25 Vostok Calibre 2605 that is highly regarded as a "workhorse" movement that offers excellent value, distinct history, and extreme mechanical durability. With her 36mm is a perfect everyday watch with transplanted watch.