Alvin and Kelvin Keech grew up in Hawaii and were both playing ukulele from a young age. As adults they moved to San Francisco where they repaired, sold and gave ukulele lessons. They also played many society parties and social gatherings. Around 1916 Alvin began building banjo ukuleles. Kelvin had remained in Europe after WWI and In the 1920s they introduced and marketed their banjo ukuleles in Europe. This one is un-labeled, but is definitely their work. With rough period hard shell case.