I am on a posting blitz today! Here are A few more pots from my collection I thought were worth sharing.
Fujikake Yuzan, 4" by 3.5" by 1"
One of the most popular painters of porcelain pots in the modern era, Yuzan’s talents as a potter are equally wonderful. For more information about Yuzan, visit Peter Krebs wonderful site on bonsai pottery.
http://www.bonsaipots.net/index.php?page=yuzan-fujikake
Antique Chinese, circa 1890s 16" by 12" by 2.5"
Detail
A wonderful middle crossing Chinese pot of bright red clay. The feet on this pot are what originally attracted me to it, very ornate and unique.
Yuki Shoseki, 6" by 4" by 1.5"
Rectangle porcelain 5 color sometsuke with cloud feet by Yuki Shoseki. Yuki is the successor to Ishida Shoseki, but has an intricate style of his own. Like his predesesor, his pots are immediately recognizable.
Ryusei, 7.5" by 4.5" by 1.25"
Rectangle by Ryusei with an interesting green, blue, and grey mottled glaze. Ryusei glazes are unique and often thick.
"Zo Shin" 4" by 3" by 1.5"
I know nothing about This potter, but it’s signed “Zo Shin”. I like the white crackle glaze with red glaze accents, and the body of the pot is very thin walled, showing skill. The pot reminds me of similiar pots by Imaoka. Sometimes it’s not about a big name well-known potter, but the quality of the pot itself.
Japanese Bonsai Pots Blog 
Hi there, I’m a beginner in bonsai, and I’ve been reading a few blogs, including yours obviously. That developed my interest in pots, as well as actual trees. Your blog is great for my new interest in pots, thanks for taking the time to write about them and take photos. It’s really interesting.
I was wondering, how do you make a difference between a handmade pot and an industrially moulded one ? Because I’ve got a couple that came with a cheap tree I chose to begin with, thus cheap industrial pots, and I can’t see any kind of thin lining on the one that is currently empty, like I see on non-bonsai regular garden pots.
In a more general manner, as I’ve never seen in person a good quality pot, I don’t really know how to recognize a bad quality one.
Thanks, keep up the great work !
Hi Luc,
Thanks for the comment. To begin, the vast majority of handmade pots are marked with a Hanko or Rakkan. Even western produced handmade pots generally have some marking. So a familiarity with producers and chops is a good place to start. From there, there are several different methods of “handmade”. Wheel thrown pots will often have rings on the interior. Well made pots carved from a single block of clay will have no marking whatsoever around the points where the feet meet the bottom of the pot. Pots hand pressed into plaster molds(the most common and cheapest form of Eastern origin “handmade” pots, most Tokoname pots are produced this way) will have marks from the join union at the feet, as will many slab and coil made pots. Slip cast pots(the cheap production pots you’re talking about) will have some type of raised line in the clay where some clay leaked into the joint where the two halves of the cast can be pulled apart to remove the pot. Often this is hard to see, especially if the pot is glazed.
So the long and short of it is, getting to know and see the really great handmade pots, and you’ll quickly be able to tell the difference!
Right, thanks a lot for that info, very helpful.