Flip almost any good Japanese bonsai pot over and you'll find something pressed, scratched, or painted into the clay. A little square. A rectangle. A few brushstrokes in blue. Most people give it half a second and set the pot back down.
I want to talk you into looking longer.
That mark isn't a brand or a factory stamp. It's a person. Somebody sat at a wheel or a slab table, made this thing with their hands, and then — at the end, when it was done and they were satisfied — signed it. Some of them signed thousands of pots over fifty years. Some of them are gone now, and the mark on the bottom of your pot is one of the last things they left.
I should say up front: I don't read kanji. I can't. What I've got is a phone full of photos, a lot of years of handling pots, and help from people who do read it. So take this as a field guide from an enthusiast, not a scholar. If you know better than I do on any of these, I genuinely want to hear it — that's how the rest of us learn.
First, the vocabulary
Chop is what most of us in the West say. In Japan the seal itself is an inkan or hanko, and the signature area on a piece of art is the rakkan. Nobody's going to correct you for saying "chop." I say it every day.
Trade name vs. real name. This trips up more people than anything else. Most of the names you see on pots — Gyouzan, Yamaaki, Bigei, Youzan — are kiln names or art names (a gō), not the person's family name. Behind Gyouzan was a man named Nakano Yukizou. Behind Yamaaki is Kataoka Toshio. Behind Bigei is Hirata Atsumi. Same pot, two correct answers, depending on whether you're asking about the kiln or the human being.
Impressed, incised, or painted. Three different signatures, three different feelings:
- Impressed — a carved seal pressed into wet clay. Crisp, repeatable, the most common thing you'll see.
- Incised — scratched or carved in by hand with a tool or a nail. No two are identical. On some kilns this is the tell that separates a handmade pot from a production pot.
- Painted — brushed on in underglaze blue before firing, usually on porcelain and painted ware. Loose, fast, personal. Closest thing to a real autograph.
Direction matters more than anything else
This is the part I wish somebody had told me first, because until you get it, you're not reading a chop — you're looking at a picture of one.
Japanese and Chinese seals do not read left to right. They read top to bottom, and then right to left. Start in the upper right corner. Go down. Then move to the left and start at the top again. It's the same logic as an old vertical page of text, squeezed into a square.
So on a four-character seal — which is the most common size you'll find on a bonsai pot — the order is:
1 | 3 ----+---- 2 | 4
Upper right, lower right, upper left, lower left. Get that backwards and you don't just get the name in the wrong order, you very often get a completely different name, or nonsense. This is exactly how the same two characters give you Kougetsu one direction and Gekkou the other.
Three ways to figure out which corner is "upper right":
- Find the frame. Most chops sit inside a carved border. Its corners, and the way the characters are packed against it, tell you the seal's own orientation — which is not always the same as the pot's. Rotate the photo through all four positions and one will suddenly look deliberate instead of random.
- Look for the "end" characters. Signature seals usually finish with a word like 印 (in, "seal"), 作 (saku, "made"), 造 (zō, "made"), or 之 (no, possessive — as in "the seal of so-and-so"). Those come at the end of the phrase. So if you can spot one, you haven't found the name — you've found the finish line, and that tells you which way you were supposed to be traveling. For a non-reader like me this is the single most useful trick in the whole business.
- Look for characters you can recognize by shape. 山 (zan/san, mountain) ends an enormous number of potter names — Gyouzan, Youzan, Shouzan, Kakuzan, Seizan. 峰 (hō, peak) shows up in Shukuho and Reihou. 石 (seki, stone) is in Shoseki. These have a clear top and bottom even in seal script, so one recognized character orients the whole square.
A caution I'll flag rather than pretend I've settled: you will occasionally run into a four-character seal laid out in a circular order — upper right, lower right, lower left, upper left — instead of the standard column order. It's a real convention in seal carving, and it's one more reason to have a reader confirm anything you're about to put a price tag or a certificate of authenticity on.
Single lines and brushed signatures follow the same rule. That incised line of characters underneath a chop, or a signature painted in blue along the foot: older pieces run right to left, modern ones often run left to right. On an antique pot, assume right to left until somebody tells you otherwise.
One more: a carved stamp is cut in mirror image so it reads correctly once it's pressed into the clay. A signature scratched directly into the pot with a nail or a tool is not mirrored. So if a mark looks strangely backwards, that's information about how it was made, not a sign that it's fake.
Double chops. Sometimes you'll find two marks side by side — a big one and a little one. Often that's the kiln or studio mark plus the individual maker's mark, or a generational mark. Two seals means two pieces of information, so photograph both.
Generations. A lot of these names are inherited. The 1st generation makes the reputation, the 2nd and 3rd carry the name forward, and the pots can look and price very differently. "Shoseki" alone doesn't tell you much. "First generation Shoseki" tells you a lot.
Then look at where it is
I have a good friend in Tokoname who kept telling me the same thing: "Pay attention to where the stamp is."
First time, it went right past me. Second time too. It took him saying it a third time before I actually stopped and looked — and once I did, I couldn't stop seeing it.
The mark isn't only what it says. It's where the maker chose to put it, and how much care went into putting it there.
Ask yourself:
- Is it centered? Or is it shoved off to one side because somebody was stamping a stack of pots and moving on?
- Is it straight? A chop pressed in crooked took two seconds. A chop pressed in square took a moment of attention.
- How many marks are there? One seal, or a seal plus a second small one, plus an incised signature?
- Are they placed in relation to each other, or just scattered wherever there was room?
The best example I know is Suzuki Suzan. You'll find his pots with the coveted acorn leaf, and then once in a while you'll find the one — a pot carrying several chops, in places you don't normally see them, and every one of them perfect. Centered. Creative. Placed with pride. Somebody finished that pot, looked at it, and decided it deserved more than the usual.
[PHOTO: Suzuki Suzan — acorn leaf]
[PHOTO: Suzuki Suzan — multiple chops,
[PHOTO: Suzuki Suzan — detail of a chop in an unexpected spot]
That's the pot you collect.
Now, the flip side, and I want to be careful here, because it's easy to take this too far. A chop that isn't perfectly straight does not mean you're holding a lesser pot. It isn't a defect and it isn't a mark against the maker. Enormous numbers of excellent, honest, hardworking pots were stamped quickly because that's what the job was that day — production pots have kept trees alive and looked good doing it for a century, and a fast chop is simply how a fast chop looks.
What placement tells you is what kind of pot you're holding, not whether it's a good one. A deliberately placed set of marks is the maker leaving you a note that this piece was special to him. The absence of that note doesn't say the opposite. It just doesn't say anything — and plenty of great pots don't say anything.
So use it as a plus signal, not a minus. When the placement is beautiful, lean in. When it's ordinary, judge the pot on the clay, the lines, the feet, the glaze, and the way it sits under a tree — the way you would have anyway.
The chops
Gyouzan — Nakano Yukizou
[PHOTO: Gyouzan square chop]
The one I probably think about most. Nakano Yukizou worked out in the mountains, lived a quiet life, and made pots that don't look like anybody else's — bold feet, cut corners, drainage holes that make you smile, and shapes that are somehow awkward and poetic at the same time. A friend of his told me that only Gyouzan himself would ever have known why the shapes are what they are.
He's gone now. His son, Nakano Yuuji, is producing under the kiln, which has done what it always does — pushed demand for the elder Nakano's work up. Look for the nail signature on Gyouzan pieces; on this kiln that's the line between a production pot and one he made by hand.
Yamaaki — Kataoka Toshio
[PHOTO: Kataoka Toshio chop and incised signature]
Here's a good example of the trade-name thing. I had this one filed in my phone as "Kataoka Toshio" without connecting it — Kataoka Toshio is Yamaaki. If you love old Yamaaki the way I do, the rich clay and those sharp lines, this is the man's name.
Worth knowing the family runs deep in Tokoname: Kataoka Sadamitsu is the second-generation Yamaaki, and there are several more Kataokas making pots under their own trade names.
Bigei — Hirata Atsumi
[PHOTO: Bigei incised signature, shudei clay]
Born 1939, taught himself, opened his own kiln in 1975. Mostly unglazed shohin and chuhin work, and he's best known for a shaded vermilion shudei with a burnished surface that's hard to mistake once you've held one. Simple shapes, built to stay out of the tree's way.
Ino Shukuho — Kyoto
[PHOTO: Shukuho single chop]
[PHOTO: Shukuho double chop]
[PHOTO: Shukuho 3rd generation double chop]
Not Tokoname — Kyoto, and three generations deep. The current Shukuho, Ino Yoshiki, was born in 1943. His father, Ino Kiichiro, supplied the Imperial Household and was a close friend of Heian Tofukuji; a number of Tofukuji's later pieces were fired in the Shukuho kiln. That's real history sitting under a shohin pot.
The pots are carved by hand, which keeps output tiny. The oribe glazes with the silver overglaze speckling are the signature move, and people who know say the third generation's oribe runs awfully close to Tofukuji's own.
Notice the double chop on two of these photos — the second small seal is doing work. That's what tells you which generation you're holding.
Ishida Shoseki — 1st generation
[PHOTO: Shoseki incised mark]
[PHOTO: Shoseki painted mark]
[PHOTO: Ishida Shoseki blue painted signature]
My favorite story in this whole batch. Ishida Shoseki was a woman, born in 1925, who didn't start making bonsai containers until 1969 — she was around 50 when she first trained at the wheel, in Imari, and then went on to study painting. Fifty. She built a reputation on painted porcelain: Imari-style geometrics, figures, landscapes with pines on a cliff and little boats down below.
She passed away in 2005 at the height of her popularity with shohin people, and her daughter-in-law took the name as the second generation. When somebody tells you it's too late to start something, this is the pot I'd point at.
Her signature shows up painted in blue and also incised, which is why three of my photos look like three different marks.
Bushuan
[PHOTO: Bushuan oval chop under drip glaze]
A friend looked at one of these once and said, "just another pot with a heavy drip glaze." I understand why. But look at what's actually happening: on a small pot, with intentional step-cut feet, that heavy drip runs evenly down every side and stops right at the edge. Every side. That's not an accident of the kiln, that's a man controlling both the form and the color of a glaze right at the edge of where it wants to go.
Bushuan spent a decade as a champion auto racer before this. I read these pots as boasting — a thrill-seeker seeing how far he can push it and still hold the line. Most of his contemporaries are far more reserved. He's one of the few Japanese potters whose pots ask to be noticed.
Gekkou — antique
The oldest-feeling piece in the batch. That mark is hand-drawn in blue rather than stamped — somebody sat down and painted a box and two characters into the foot of this pot. The characters are 香 and 月. Read one direction you get Kougetsu; read the other, Gekkou. Older pieces are often read right to left, which is exactly the kind of thing that makes a non-reader like me nervous about being too confident.
What I'd tell you to do with this
Photograph the bottom. Every time. Before you sell it, before you gift it, before you forget. Good raking light across the mark, no flash — and shoot the whole base before you shoot the close-up. Placement is evidence, and a tight crop destroys it.
Get both marks. If there are two seals, the little one usually carries the generation or the individual maker. People crop it out constantly and lose half the story.
Don't over-trust a single source. Me included. Names get transliterated four different ways, generations get skipped, and a lot of what circulates in English started as somebody's best guess in 1985.
Ask. There are people in this hobby who read kanji and are unbelievably generous about it. Post the photo. Somebody will know.
I'm not going to get all of these right. I'm sure something above will get corrected, and honestly, good — I'd rather be corrected than be the reason a bad name sticks to a good pot. But I'd rather we all look at the bottom and wonder about the person than keep flipping pots over, seeing a squiggle, and setting them back down.
Somebody made that pot. Their name is right there.
Corrections, additions, and better readings genuinely welcome — send them my way and I'll update this post.