As shown in my opening post my set had 2 caps. One was a new one as part of the Windsor set, the second cap was from their returns. If there was a difference at, it must have been the minimal difference in the polishing I seemed to notice.
Later as I was so happy with my Windsor and as I like the mixed metal look, I ordered 2 copper plates from their returns. I don't know, how 'new' copper plates would look like, but honestly I wouldn't have complained if those plates had been declared as new, so immaculate they look.
Above The Tie doesn't do monkey business, I bet you will be fine with anything you order from their returns section. I strongly assume, that what has been returned, hasn't been returned because it was faulty, but from the test drive they offer. So I would only expect slight marks of use.
Thanks drydown and David, I just picked out a few pieces and clicked submit.