http://ianlafo.com/porcelain-blue/
Porcelain Blue
I've been searching online for a ceramic seal. Its on an old blue and white teapot.?
It comes in four parts (the pot, lid, filter? Y cup) the four parts has a number of five of them. The boat itself has a label that has surrounded TK scroll work and a crown on it. Someone know a database that can search for this?
As already mentioned, the library has books brand names and is probably the best Kovel is. If you really can attach a photo of the mark, I've collected over the years and may be able to help. And if I do not recognize it, I have books!