http://www.potsaa.com/china-royal/
How do I find the value of Royal China Inc. bowl?
Markings say Toreador Royal XX w / 28-K and gold on the bottom of this article.
Try a tour of antiques. You'll see some evaluators with different areas of marketing, including china. You can also take a antique shop to be evaluated, but they will always underquote you. Another way to verify the value is to go to your library Local and see if you can find a book on the values of China bowls. You would be looking for a book that is like a priceguide baseball cards, but for dishes and bowls. You look for the bowl on eBay and see what vendors sell this bowl another way to get an idea of what your bowl is.
Cottercup University of Peking, Bejing China vs Royal University of Technology Sweden set 1
