hey all i just got a auto harp by oscar schmidt it is brown with the brown plastic cover it is a 36 string and has 12 cord buttons on it it is missing only one string and has the paper laminate keybored at the bottom it takes the ball strings and has a crome peace at the bottom also about what year do you think it is? i was told by wifes grandma that she got it in the 50's but grandma is a little crazy lol it is in great shap but is real dusty it was found in a closet in grandmas house any idea about the year or its value?