The one with no copyrights on would have to be a used one. That is how US Games do it now, and that is the way life is
Even the commemorative one they put out has them on. Their very first - the ACTUAL 1971 print, yellow box, but you have to be able to see the cards to be sure, has none...
What you are looking for (if you can find one - they come up on ebay a lot) is the blue box one someone here thought you meant. Published by Rider (hence the name that has stuck !)
Here's one to see how they look -
http://www.ebay.com/itm/Vintage-Pre...627?pt=LH_DefaultDomain_0&hash=item4aba6ed53b
though I think the price is WAY too high.
A really good site for info is Holly's -
here. Though oddly - the blue box one doesn't seem to be there.
Many don't find the copyright thing that intrusive - and of the easily available ones, I'd go with the Commemorative too.