Here are 4 9” Spode plates in a pattern I could only find at replacements.com, and that was in red rather than the blue that I have. It is pattern #SP125; stamp on the back says Jewel Copeland. One of them has a small discolored place on it; other than that they are in perfect condition. With no other plates like this that I can find online, any suggestions on a starting price for these?