Gotheborg.com is well indexed by Google and most other search engines. So, using Google to find what you are looking for might well be the best. If this does not give the expected result, try any of the other optional search boxes below. Try to search for "qing marks dated" to get an idea of how this works. You will find that such a large topic will have too many hits to be practical and that in this case, it is better to just go directly to the Marks section, but you get the idea.
Type in the keywords you are looking for such as Ming marks or rose mandarin, etc. You will search everything on this site except the For Sale section and the Discussion Board.
Visit 'Web shop' and use the search box there.
Hard core, fail proof, know it all mother of all porcelain knowledge resources. Separate - gigantic - section with currently more than 90,000 messages and pictures in archive and growing. Separate search engine.
Visit the 'Discussion Board' and use the search box there.