I have an Imperial,one row button accordion. The Model is the Celestical. It’s black in color and has flowers painted on it. It is marked as a “Gold Medal winner, with the label of Melbourne 188819 on it. Since its out of tune somewhat, does anyone know what Key this accordion should be tuned to. Any other information about this accordion I would like to hear about, so please feel free to share it with me. Thank You in advance Earl