I was trying to find some info on my grandpa's Guitar. Its a Standel I dont know what model it is but its a hollow body electric he bought in the late 1960's early 1970's. He told me before he passed that there was only 4 of this model made. I dont know how to find out what model it is so I was wondering if anybody knew of a website or some place I could call for info on its value. He also has a standel amp thats huge like 5 feet tall. he was told once that the guitar and amp together was worth $20,000 to the right buyer. Thanks hope one of you have some knowledge about this.