Thank you so very much for the info on our wedgewood bowl. A Roman numeral appears to be IV at the very top of the diamond in a circle. Inside the diamond at the top is a 30. On the left side is the number 12. In the middle is a Rd. On the right is a capital K. At the bottom of the diamond is a capital C. It does have three chips on the base or foot of the bowl. Any more info on this would be great to know. Thanks again!