The marking “RW” inside a shield is almost certainly the case maker’s trademark, not the watch brand. The text “Boden rostfreier Stahl” is German for “stainless steel back” (literally “case back, stainless steel”). * Style: The watch has classic Bauhaus/WWII-era military-inspired Arabic numerals, cathedral-style hands, and fixed-looking lug proportions typical of late 1930s to early 1950s watches. * Crown position: The crown appears to be pulled out in the photo, which is why it sits away from the case. Likely age My estimate would be 1940s, possibly extending into the early 1950s. Possible origin Most likely: * German, or * Swiss-made for the German market. The German wording on the back strongly suggests it was intended for a German-speaking market. Value If it is running and original: * $175–380USD is typical for an unbranded vintage manual-wind watch. * If it houses a desirable Swiss movement (AS, FHF, ETA, A. Schild, etc.), collectors may value it a bit higher. Funcțional !