YAKUMO JAPAN

Makers · 作家 · Mino

Sekishu

市之倉石州

1925–2006

Two names on one kiln's pots: under a hundred pots a year, he judged, and he could sell them himself rather than through the trade.

A shallow unglazed hexagonal bonsai pot by Ichinokura Sekishu, on cloud feet
Hexagon, unglazed, shallow.

At a glance

Art name
Ichinokura Sekishū 市之倉石州
Real name
水口元夫
Dates
1925–2006
Region
Ichinokura, Tajimi — Mino
1955
Set up on his own as the Kōhō kiln 光峰窯, making sake and tea wares
From about 1970
Bonsai pots — moulded, in numbers. These are the 光峰 pots
From about 1972
Hand-made, one at a time. These are the 市之倉石州 pots
Output
Under a hundred hand-made pots a year. Painted pots, about three hundred in fifteen years
Range
From bean pots under a centimetre to 60 cm
Successors
水口修・悦子

01 · 二銘 Two names

Why he split the name

The reason for the split was practical, and his own reckoning lies behind it.

He set up on his own in 1955 and made sake cups and tea wares. Bonsai pots came about 1970, moulded and made in numbers — cheap, easy to use, and well liked. Those are the 光峰 pots, and the name is the kiln's.

Then he grew uneasy about how opaque the distribution had become. From about 1972 he began making pots by hand, one at a time, and those are the 市之倉石州 pots.

The reasoning is recorded, and it is a working potter's reasoning: at under a hundred pots a year, he judged, he could sell them directly himself.

At under a hundred pots a year, he judged, he could sell them himself.

So the two names mark two things at once: how the pot was made, and how he meant to sell it.

And they are not exclusive. One pot is identified as a joint work, 石州・光峰合作, and a boxed pot can carry both names: one example has 市之倉窯 石州 written on the cloth and 光峰 on both the box lid and the foot.

02 · 技法 The techniques

Porcelain inlay, and raised enamel

He was keen on new techniques and diligent in research.

Beyond ordinary glazed pots he worked in underglaze blue, in overglaze red, in cockscomb red, in relief carving. Two techniques are singled out as his own ground: inlaying white porcelain clay into a stoneware body, and painting in raised enamel.

Of the inlay the note is practical — difficult, slow, and therefore very few of them exist. His cockscomb red is also very scarce.

From about 1979 he added unglazed clays as well: white, purple, coarse purple, vermilion, black, pear-skin. The range runs from bean pots under a centimetre to pieces 60 cm across.

03 · 数 The numbers

Three hundred painted pots

His main business — the sake cups and tea bowls, made in numbers — was doing well, so the pots were made in the gaps. The total number is small.

For the painted pots there is a figure: across about fifteen years of working at them hard, some three hundred in all.

Three hundred, over fifteen years. That is the scale to have in mind before believing any attribution.

Three hundred painted pots, over about fifteen years.

In 2006 he had around twenty pots formed and painted, waiting only to be fired, and meant to finish those before starting anything new. A collaboration with his successors, 水口修 and 悦子, was being planned.

04 · 石州 The hand-made name

The mark 市之倉石州造 cut into the unglazed foot of an Ichinokura Sekishu pot

市之倉石州造 — cut into the bare clay with a point.

The mark on a hand-made pot

The foot of the pot above. 市之倉石州造 — made by Ichinokura Sekishū — six characters in two columns, in a flowing hand.

Written, not stamped. The characters are cut straight into the unglazed clay with a point, freely and without a frame — nothing is pressed in. The documented 市之倉石州造 is the same wording set inside an upright panel on a light ground; this one is cut straight onto the bare foot.

This is the half of the output this page is about. A written 市之倉石州 means one of under a hundred pots a year. A 光峰 mark means the other line, and a different kind of pot.

05 · 落款 The mark

Four documented marks, and what each is

Four are documented. Two of them are written by hand rather than stamped.

Mark Reading Note
市之倉石州造Incised, in an upright panelCut into a light ground.
市之倉石州Written by handA brushed signature, not a stamp.
市之倉石州造A round stamp on lapis groundPressed, on a ruri ground.
石州造Written by handBrushed straight onto the body.

Kōhō is not Kōyō

光峰 here is Mino, and it is a line rather than a person. It is Kōhō, and so are 幸峰 and 好峰. 鴻陽 of Tokoname is Kōyō — a different reading, and a different maker.

06 · 代表作 Recorded works

Recorded works

Not for sale — twenty works recorded for this maker. Nearly all of them are small: most sit between 7 and 10 cm.

Work Size (cm)
Stoneware with porcelain inlay, birds and flowers in underglaze blue — rectangle, everted rim9.8 × 8 × 5
Stoneware with porcelain inlay, a landscape in underglaze blue — shitagata, everted rim. Chinese literati manner, a scholar calling on a friend at his gate; the bamboo is softly done. A verse from the Man’yōshū runs along the side8 × 8
Unglazed, a rising dragon — round, rope rim. Made jointly. Catalogued as 石州・光峰合作8.6 × 4.8
White glaze with enamel, after the Chōjū-giga scrolls — rectangle, inner rim. The reverse has a frog shying at a will-o’-the-wisp13.7 × 9.8 × 4.5
Underglaze blue with enamel through a window, after the same scrolls — square, outer rim. The window panels are a close-worked blue landscape, set against the sparing, comic animals9 × 5.5
Underglaze blue, a landscape — shitagata, everted rim. Almost the same form and size as the inlaid one above, and it reads quite differently7.8 × 8
Overglaze red, loose horses — rectangle, outer rim8.9 × 6.9 × 4.2
Underglaze blue, a landscape — square, inner rim7.5 × 8.4
Enamel through a window, an ox carriage — round, everted rim. The body is filled with the seven-treasures pattern and the window left white for carriage, cherry and maple; gold dust is scattered in the ground. The reverse is a phoenix8.8 × 6.8
Celadon with carved flowers, a landscape — round, outer rim8 × 6
Celadon with copper red run over it — round, everted rim. Thought to be after a noted Kotō-ware piece; the red carried down to the waist as well is the modern touch8.2 × 5.2
Green glaze — outer rim, ancient-mirror form18 × 5.8
Green glaze, hand-built — round, outer rim8 × 4
Cockscomb red — rectangle, shamisen-body form. His cockscomb red is well thought of, and there is very little of it8.9 × 6.8 × 3.4
Ruri glaze — oval, bag form14 × 11.3 × 2.8
Unglazed — rectangle, outer rim. A small pot, but his unglazed work runs wide and goes up to nearly two shaku18.8 × 15.3 × 4.2
Unglazed, bamboo-node band — rectangle, inner rim7.6 × 5.9 × 3
Unglazed — round, drum form, inner rim19.2 × 4.9
Unglazed with figures in relief — oval, outer rim. Small tablets of clay applied after forming and then carved, with the four scholarly accomplishments on them. His unglazed pots are fairly numerous; this one is not17.3 × 13 × 3.8
Unglazed, a landscape painted in coloured slip — oval, outer rim. Thought to be after the Chinese painted udei and shidei pots17 × 13 × 3.8

07 · 窯 The kiln now

He died in 2006. The kiln did not

Two facts, and they have to be given together or one of them turns into a lie.

His death is recorded in an editor's note: November 2006, aged 81.

In 2024, the kiln was recorded as operating as 光峰窯 水口製陶所.

So: pots from his own hand are finite, and there will be no more of them. Pots from the kiln are not. We say both.

Pots from his own hand are finite. Pots from the kiln are not.

Available

Sekishu and Koho pots in the collection

Each pot ships worldwide from Tokyo.

Send us a photograph of the underside and we will tell you what the mark says, and whether it matches a form documented here — which is the first thing to settle with this kiln.