1991 Gibson OP-25 acoustic/electric...less than 200 made! I have never heard of a Gibson op-25. The seller says only 200 were made? I cant find that much info on this guitar. Is $575 a good price for a OP-25 in this kind of condition? I'm ok its beat up because i'm concerned with the sound of it over the looks. This is one of the cheapest gibson acoustics I could find in my area. So please give me some info on this guitar. thanks!