I really don't get the expensive abused guitar thing at all. My attitude is that instruments are about how much you like playing them, and if you buy an expensive one, can you recoup the price if you need to sell it?
If you buy a guitar because it's an investment - to hang on the wall - then provenance is everything. If you buy it to use, then if you pick it up and love it - provenance is meaningless. I got a good deal on an American Standard Jazz bass a few years back. I've never had a Jazz, and didn't like the ones I had played. Then I played this one, and knew instantly I wanted it. It was cheaper because there was a big ding on the player side of the headstock. Not visible with a tuner clipped to it. There's a small belt scratch on the back too. I've discovered that it's in fact a blend of two guitars. The shop had two Jazzes - one with a dinged headstock, and the other with a scratch - so they swapped the necks, giving one perfect one and one damaged one. Only one discounted. I'm not bothered in the least - and it explains why I couldn't find the body finish and neck style on Fender's site.
That 1979 bass may have had new tuners, new pots, repairs and all sorts. Original parts replaced with new ones - who knows in nearly 40 years. It's had a hard life, and many of those bashes look like it's really beaten up and not cared for lovingly - just a tool. I cannot imagine wanting to actually spend decent money on it!
If you can afford it, and like how it plays and sounds, buy it and forget the provenance. It's in your head. If the bridge turns out to be a modern copy from Ebay, who cares? One of my pots got crackly - so I stuck a new one in. Not sourced from Fender, or even a music shop - but my normal component supplier. It's a pot, not something magic.
I fear hi-fi audiophool attitudes are creeping in - is it about money, as in making a profit. Or is it about having a great guitar. I collect instruments - I never sell any. Still got the one I bought when I was 17 in the 70s. I bought a Chinese Les Paul because it looked beautiful, with a tree of life neck inlay and amazing colours. I saw an original on Ebay recently going for absolutely crazy money. I don't play it, but it looks amazing - I'd rather have that on the wall than that distressed and tatty Fender!