Two Ukuleles grafted together. The Waterski Ukulele is an old Silvertone Soprano. The other half is an unlabeled Concert size Ukulele with a Sailboat stencil design. It appears to be made of Mahogany, Maple and Cedar. The whole body of the soprano is grafted into the cutout body of the concert. This oddity has always been a wall hanger for me and I have never had it strung up. It may work but no guarantees. It seems pretty solid, the tuners are loose, the geometry looks like it may be successfully strung, two edges on the back of the soprano show a gap.