: i’ve been to gruhn’s , and their best guess was 500 dollars and upwards. they couldn’t find any info on it. : i recently had it in to gibsons high end shop (in nashville) and the guys said they absolutely love the sound . you might want to hang on to it til you find out the real deal on it . i’d like to hear more about yours as i’ve never seen one like mine. i’ve had mine along time .thanks , Dana