That looks like it belongs in a museum. I\'m sure that there would be some collectors value in that \'lyre\'. It\'s hard to say if it\'s worth a mint? After doing a little research on the net, it seems that they were used for a while and then went out of fashion and production. This was because of the poor sound of the instrument compared with other guitars (lutes, etc) of their day. Consequently, their value was diminished.
As a guitar enthusiast, I\'d love to have a play on this guy! If you do decide to sell it, please let me know. As I\'m in the market to buy an acoustic guitar for writing tunes on. This could work.