Maybe it's the color of the wrap, or the shape of the lugs, but this set seems more 70s than 60s to me. If the BD hoops are chrome, then I think that also points toward a likely 70s dating. Having the original matching cymbals, hardware, and pedals is very uncommon for these types of sets, and I would think it would add additional value to the set. As to an exact value, it would totally depend on where you're selling it, and more importantly, who you are selling it to.
Having the rail it most likely is a 60s kit. And yes, it is highly unusual to have all the original stuff, but it is obscure at best, and you have to remember, the chrome is thin and most likely pitted in many places. The lugs look very Star-like to me. I love the look, you wouldn't consider a trade for some Ludwigs, would you?