Minton Earthenware Plates

(lifted some text from a previous entry I found on this site, which sounds exactly like my plates). Each plate has about 4-5 images, including fish, shells, butterflies, flowing grasses, elegant looking flowers, each image is seperate on the plates and of reasonable size from 2inch -3inch. On the back of each item, is a diamond shape at the top with in the 4 corners of the diamond shape are letters and numbers, starting from top in a clockwise order they are, 18, C, W, 6. in the middle of the diamond is Rd. Under the diamond each plate has a different number in red.Tthere is what looks like a Swallow,under the diamond, to the left, on the right is a daisy like flower and a small butterfly.Just underneath that, written on a sort of swirly ribbon design,is. WS Coleman Inv s-Pel (or Del?), and a little under that is MINTON & Co Manuf. There are indented marks with letters too.