My grandfather recently passed away and my grandmother and I are selling some of his things. He purchased an unbelievable sound system YEARS ago. Klipsch Corner Horns. They are unreal...as you know. We're selling them, but didnt' know where to start. I have an idea what they're worth, but would like an idea from you guys and to see if anyone was interested in them. They are 1975 (serial 7N125) corner horns. K-B-RO. Have the original owner's packet still adhered to the inside of the right speaker along with the registration card. What do you guys think?