To be neutral and fair:
I've ordered some proof Kennedys from Mount Vernon which were nearly cameo quality, and exceeded my expectations.
I've never noticed that any appeared to be cleaned, in fact, (on the flip side) some appeared as if they were sitting in a shopping mall parking lot for a year.
So my experience has been hit or miss.
That said, there are certain things, including coins, that one has to resign a little uncertainty when buying on-line.
My main peeve is that I pay for priority shipping, yet they sit on my order for over a week before they ship the product, while they cash in my funds immediately.
Their prices are very fair, but the product has been 50/50,
I'm not dropping the MOAB on 'em yet, (like I did with Littleton) but we'll see how my next order goes.
David Advance, NC