Tomobako: What the Wooden Box Tells You About Japanese Pottery

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Buy a sake cup or a tea bowl from a Japanese artisan and it may arrive in a small, pale wooden box tied with a flat woven cord. Inside the lid there is brushed writing and a red seal. To many people outside Japan it looks like elegant packaging. In Japan it is something more: the box is part of the piece.

That box is called a tomobako. It is made for one piece, and the artisan signs it. The writing names the work, the signature says who made it, and the seal confirms it. For collectors of tea ceremony pieces and for anyone receiving pottery as a gift, the box carries as much meaning as the object it holds.

This guide explains how to read a tomobako: what each part of the box is, what the writing on the lid usually says, how a tomobako differs from other wooden boxes, what a box can and cannot tell you, and how to store a piece in its box so both last.

What a Tomobako Is

The word combines tomo, meaning together or accompanying, and hako, meaning box. A tomobako is the box that accompanies a piece from the moment it leaves the artisan's hands. It is sized to fit that piece, and the artisan writes on it, signs it and stamps it with a personal seal.

The important point is who wrote on it. A wooden box with writing is not automatically a tomobako. It is a tomobako only when the inscription comes from the same artisan who made the piece. That is why the box matters: it is the artisan's own record of the work, kept with the work.

The tradition grew up around the tea ceremony, where tea bowls, tea caddies and flower containers were handed down through generations and their history mattered. Today it continues across many kinds of handmade Japanese pottery, especially sake cups, tea bowls and pieces made as gifts. It is particularly common in Bizen ware, where many artisans box their work.

A tomobako is different from the mark on the piece itself. The mark under the foot is covered in our guide to pottery marks. The box is a second signature, made separately, and it tells you things the foot cannot.

The Parts of a Tomobako

Open a tomobako slowly and you will usually find several layers. Not every box has all of them, but knowing what each one is helps you keep everything together.

Some boxes also have a sheet of paper folded over the lid under the cord, as in the photo at the top of this page. It keeps the wood clean and is part of how the box was presented. Keep it if you can.

How to Read the Lid

The writing on the outside of the lid usually names the piece in a few characters: where it is from and what it is. On a Bizen sake cup, for example, you might see the characters for Bizen followed by the word for the kind of cup. On a tea bowl, the region and the word for tea bowl. Some artisans add the firing effect or the name they have given the piece.

Inside the lid, or on the side of the box, you will usually find the artisan's name and a seal pressed in red. The name is often written with the character for "made by" after it. The seal may be the artisan's name or a studio name in an older style of script that is hard to read even for many Japanese people.

You do not need to read Japanese to make sense of a box. A handful of characters come up again and again.

If a word on the lid names a firing effect, our entries on yohen and hidasuki explain what to look for on the piece itself. The lid and the piece should agree: a box that says hidasuki should hold a piece with those red straw marks.

Tomobako and Other Wooden Boxes

Several kinds of box look alike at first glance. The difference is who made and signed them, and when.

• Tomobako. Made for the piece and signed by the artisan who made it. The original box.
• Awasebako. A box made later for a piece that had lost its original box, or never had one. It may be well made and even inscribed, but it was not signed by the artisan at the time.
• Authenticated box. A box inscribed later by someone with standing to confirm the work, such as the artisan's successor or a recognized expert. Common with older tea ceremony pieces.
• Plain wooden box. An unsigned paulownia box supplied by a shop or kiln. Good protection, but no inscription.
• Paper gift box. A fitted paper box, often printed with a studio name. Protects the piece and makes a good gift, but is not a tomobako.

Older and more valuable tea pieces sometimes come in two boxes, one inside the other. The inner box is the original; the outer one protects it. Keep both.

What a Box Can and Cannot Tell You

A tomobako tells you a lot. It tells you which piece the artisan intended to go out into the world, what the artisan called it, and that the artisan considered it finished and worth signing. For a gift, it shows that the piece was chosen with care. For a collector, it is part of the history of the piece.

What a box does not do on its own is prove that the piece inside is the one that was signed for. Boxes and pieces can be separated and recombined, especially with older work. When you look at a boxed piece, check three things:

• The fit. A tomobako is made to size. A piece rattling in a large box, or squeezed into a small one, is a warning sign.
• The description. The lid should name what is inside. A box for a sake cup should not hold a tea bowl.
• The source. For contemporary pottery, the simplest assurance is to buy from the artisan, the kiln, or a shop that works with them directly.

For contemporary artisans, the box is also simply a sign of respect for the piece. Many artisans write each box by hand after the firing, choosing the words for that piece. It is part of the work, not decoration added afterward.

The Cord: Sanada-Himo

The flat cord around the box is called sanada-himo. It is woven rather than twisted, so it lies flat, does not slip and does not stretch. The color and pattern are often chosen by the artisan or the kiln, and some use the same cord for every box they make.

The cord is meant to be untied and tied again, so do not be afraid of it. Two habits help:

• Take a photo before you untie it. Then you can copy the original knot when you put the piece away.
• Keep it snug, not tight. The cord holds the lid in place. Pulled too hard, it can mark the soft paulownia.

A common way to tie it is to wrap the cord around the box, cross it on top of the lid, and finish with a bow that sits flat. If the original knot looks complicated, a simple flat bow is perfectly acceptable.

Why Paulownia

Paulownia is the traditional wood for storage boxes in Japan, used for kimono and important papers as well as pottery. It is very light, so the box adds little weight. It has little resin or smell to transfer to what it holds. It also responds slowly to changes in humidity and temperature, which helps keep the inside of the box stable.

That is useful for pottery, and especially for unglazed clay. Unglazed yakishime absorbs some moisture, and a stable, breathable box suits it better than a sealed plastic container.

How to Store a Piece in Its Box

The box only protects the piece if it is used well. A few simple habits keep both in good condition for decades.

• Dry the piece completely first. Unglazed and lightly glazed pottery holds water after washing. Leave it upside down on a cloth for a day or more before boxing it, longer for thick pieces. A damp piece in a closed box can develop mold.
• Wrap it in its cloth. The cloth stops the piece from moving and keeps rough clay from rubbing the inside of the box.
• Store the box flat, lid up. Keep it somewhere dry and away from direct sunlight or a heater, which can warp the wood.
• Keep the leaflet in the box. It is easy to lose, and it is the only printed record of who made the piece.
• Do not write on the box yourself. Add your own notes on a separate card inside instead.

Pieces you use every day, like a favorite sake cup, do not need to go back in the box every evening. Many people keep the box on a shelf and use the cup, putting it away only when it will not be used for a while or when it travels.

Our guide to stoneware care covers washing and drying unglazed pottery in more detail.

Giving and Receiving Pottery in a Tomobako

A piece in its tomobako makes a complete gift without further wrapping. In Japan, giving pottery in its box is a quiet way of saying the piece was chosen with care, and receiving it in the box is part of the pleasure.

If you are giving a boxed piece, leave the cord tied as it came. If you receive one, open it slowly, notice the writing, and keep the box with the piece. One day the piece may pass to someone else, and the box will tell them where it came from. Our pottery gifts guide has more on choosing a piece to give.

Bizen Pieces That Come With a Box

Among the pottery we carry, boxed pieces are most common in Bizen ware, the unglazed pottery of Okayama. The product page says when a piece comes with its box.

Takezaki Noriyasu fires sake cups in a climbing kiln, some in the front row where they are buried in red pine embers, and sends them out in paulownia boxes. Fujiwara Akira makes tea bowls and sake cups in red clay, white clay and black Bizen, including pieces pulled from the kiln at full heat in the hikidashi-guro technique, and these come with a wooden box as well. You can see their work in the Takezaki Noriyasu and Fujiwara Akira collections, or browse all yakishime pottery.

If you are choosing a boxed piece for tea, our guide to matcha bowls explains size and shape. For sake, start with the guinomi.

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Related Articles

Reading a Piece

• Japanese Pottery Marks: How to Identify a Kiln or Artisan Signature
• Yōhen (kiln transformation)
• Hidasuki: The Red Straw Marks on Bizen Pottery
• Yakishime: Unglazed Pottery Fired to Its Limit

Bizen and Its Artisans

• Bizen Ware: Pottery With No Glaze at All
• Bizen Pottery History: 1,200 Years from Sueki to the Tea Bowl
• Artisan Fujiwara Akira: Pulling Bizen From the Kiln to Make It Black
• Tea Ceremony Ceramics: A Short History of the Chawan