Does anyone have any idea what a 1959-60 Guild M-30 is worth? It looks to be all original except for some overspray on the top and a reglued bridge. It has a Hoboken ghost label. There are no cracks and the braces are all tight. Tuners are stiff but hold well and the frets must have been replaced somewhere down the road. The bridge and fretboard are Brazilian rosewood and are in excellent shape (very little wear on the board). The neck is straight and very smooth (sanded?), and the action at the 12th fret is 3/32" with plenty of saddle left- no buzzing anywhere. It plays great- very fast neck. It is a cool vintage punchy blues box that seems to be pretty rare. Any help would be greatly appreciated.