Looking at a '77 Les Paul Custom and wondering what a decent price for one is? I know that it's not the most desirable era (Norlin era, correct?), but I have a chance to play it today and want to make sure I don't over pay. Gold hardware looks pretty worn, plenty of nicks and dings, the gold cover has been removed from the bridge pickup, non-original knobs, tuners were replaced with gold Schallers (old ones, by the looks of it). Some nice belt buckle rash on the back down to the wood, but none of that stuff really bothers me-- it's my first vintage Gibson and I like the look of the ones that have been played hard. So what say ye?