The tea set is Kazuwa Yaki. From some brief internet searches, it looks like they are known for their red teawares, but about ten years ago they started making white glazes with green and blue wisps. I was on the search for a teaset that had white glaze inside the cups, and this one really caught my eye, and finding nothing else I purchased it. Here's a link and image:
http://www.ebay.com/itm/191550735152

Also, I was intrigued by the matching pairs of his/hers teacups and found a nice price on a set that looked really nice to my eye. Link here:
http://www.ebay.com/itm/221571879741
I plan to use these for a while before buying anything else. I looked for a long time at many other styles of teaware. This is such an interesting pasttime, with an art to the functional product that I am not used to.
Going forward, I am thinking about buying a glass pitcher to pour two steepings into, and then drinking from a larger cup. So, I plan to start looking for something a bit larger, not sure if a chawan is the best course or not.
Ultimately though, I plan to keep a nice tea set or two in daily use and spend most of my time and money with the tea leaves and their brews. Although my wife has given me permission to have functional tea set decorations throughout our kitchen, so I will likely be buying tea wares as much for art as regular usage for the foreseeable future.
I would be interested in any feedback on the teaset or yunomi pair, in regards to history or experience people have had with similar items. Thanks!