I recently reconnected with my granddad's guitar that he had promised to me as a small child. It (according to the inside label) is THE GIBSON JUNIOR GUITAR Style L-J No. 77124 manufactured by GIBSON MANDOLIN-GUITAR Co. in Kalamazoo Mich., U.S.A. The stamp in metal at the bottom of the body reads: PATENTED JULY 19, 1910. I have never heard of this guitar (style, model etc.) before. Any information about it would be much appreciated. Thanks.