I came into possession of 12, 7.5 inch plates, mark on back says Stratford H.Alcock and Co, Cobridge England. From what I can barely find online, these plates seem to be 19th century and 8 out of the 12 are in great condition (other 4 with small chip) the plate are also marked ivory. I want to appraise these and would like to know if anyone out there could do that.

Am having trouble uploading image