I think that was originally made for gut strings. It may be 1920's but it could also be earlier although it's based on much earlier 19 th century romantic guitars. There were countless thousands of such guitars made in the area around Klingenthal and SW Germany/ Czech. A real instrument making centre but more famously known for violin making. It was largely a cottage industry with whole families involved in the making of guitar parts. Often something like the soundboard might be made by one family and the necks by another. They were throwing these things out by the dozens - every week. They are never (or rarely) named. If they are then it's likely a stamp or label of a dealer.