The subject of Bonsai Pots is extensive and we will be updating this area as we receive information.
In the mean time some sites that have done a sterling job of this are shown below as a link.
We also welcome information to include here so please us our contact form to start a discussion and hopefully we can include your information for reference. We would also like to start a "chop marks" and Signature" reference going forward so take a picture and send it through to be included.
Author, Amelia Williams and Swindon Bonsai Society. A very nice and clear overview of pot matching.
There are some other great links out there and people have placed a lot of effort into their research.
Here is a very nice article and information regarding patina on pots:
Here is a nice informative site:
Japanese bonsai pots | Peter Tea Bonsai