I have a beautiful early 20th century vintage Royal Copenhagen platter with peacock pattern in deep blue. This platter is 13 1/4″ in diameter and the marks are the stamped KF (Kobenhavns Fajancefabrik), early 20s at my best guess. There is very, very slight crazing on the surface, but it is totally intact; there are not any chips. I would like to sell and am trying to put a value on this wonderful piece … does anyone have any ideas?