Dear David, you may be very lucky to find 70 year old audio gear in perfect conditions. You may have noticed, too, that the woofer you present is not as old as my woofer, it hasn't a hardpaper spider. Do you life in germany, or somewhere else in the world? I life in germany and I can tell you, not eveything has been stored and used under such perfect conditions. I've bought and found Klangfilm (not only speakers) that had a life and that looked as it had a life. And I'm doing this for hobby since four decades, long ago the internet. You don't know where we found such gear, sometimes for free and from the deposit container. That wasn't all the time in pristine condition, to be true. That equipment has been dumped away some two and more decades ago, and not being sold to internet dealers around the world. Maybe someone was clever and sold it to asians, but who knew that they were after this before the internet? Nearly no one. And no one wanted it to use forever, so it was thrown in the garbage or sold cheap. I've thrown things in the garbage or sold for cheap money that today bring big money, such is life. But to expect everything old to be found in like new condition isn't the reality and you know that. Just look at other internet audio dealers what kind of condition their used equipment is and anybody can know it better. Easy as that.
I knew this forum a little longer but I joined yesterday- so what? And I do post here. Does this means I'm trolling? If so, then delete my account, no problem. Than you can tell your stories of the perfect condition used gear that is more than half a century old to others who beliefe it. I don't buy it, sorry.