By lynseyl, 14 June, 2015 Category Other Distinguishing marks C K R no chips or marks Date Period 1700s 1800s antique Long Description This plate is very old vintage i think the 1700s it is stamped mason ironstone china C K. Â R Â any ideas how much it is worth Photos For Sale? Yes Log in or register to post comments Select ratingGive it 1/5Give it 2/5Give it 3/5Give it 4/5Give it 5/5Cancel rating No votes yet