I've got a 73 V4B in great condition. I got this from a Chicago studio where it sat, almost unused, since it was purchased new. There are a few cosmetic scuffs on the faceplate, and one small mark in the tolex. Other than that, I can't find any cosmetic issues. There are a bunch of photos here:
http://tinyurl.com/2exdr3z
The preamp tubes are original, and still sound great as they haven't been used much in 35 years. The power tubes are brand new Sovtek 7027s with less than 3 hrs on them. I just had a certified tech give it a 'once through' and he replaced two caps. He said everything else was perfect, and that this is the most un-touched, original Ampeg he's seen since the 70s.
I'm asking $700 for it. But I'm really looking to trade for an upright bass. Nothing smaller than 3/4. The upright doesn't need to be in great cosmetic condition (the uglier, the better) as long as it plays decent. Also apathetic to brand, as long as it plays well.
Message me, and we'll talk!