> Source: https://www.openingbid.art/artist/koseki · updated 2026-11-01

# Koseki (1807–1884)

Koseki is a Japanese artist with 5 auction lots recorded since 2007, median price $148. Some sold prices are not yet verified as premium-inclusive or hammer, and are marked on this page.

A work by Koseki is recorded as sold in 2014 for $200; whether the price includes the buyer's premium is not yet verified, according to OpeningBid's index of auction results.

## What is a Koseki work worth?

Across 3 sold lots tracked by OpeningBid, the median price of a Koseki work is $148.

The median Koseki painting sells for $121 across 2 lots.

Some prices are not yet basis-verified (premium-inclusive or hammer).

## Price breakdown by category

| Category | Lots tracked | Median price | Record price | Sell-through | Last sale |
|---|---|---|---|---|---|
| Paintings | 3 | $121‡ | $148‡ | 66.7% | 2007-05-12 |

‡ reported price — whether it includes the buyer's premium is not yet verified.

## Notable results

| Medium | Year | Price |
|---|---|---|
| Paintings | 2007 | $148‡ |
| Paintings | 2007 | $94‡ |

‡ reported price — whether it includes the buyer's premium is not yet verified.

The highest recorded result in each medium. The full sale history is in the OpeningBid app (free sign-up).

## Frequently asked questions

### What is a Koseki worth?

Across 3 sold lots tracked by OpeningBid, the median price of a Koseki work is $148. The median Koseki painting sells for $121 across 2 lots. Some prices are not yet basis-verified (premium-inclusive or hammer).

### What is Koseki's auction record?

Koseki's auction record is $200, set in 2014. Whether that record price includes the buyer's premium is not yet verified.

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Data last updated 2026-11-01. OpeningBid tracks 15,222,099 auction lots from 571 auction houses, refreshed nightly.

Cite this page as: OpeningBid, “Koseki auction prices”, https://www.openingbid.art/artist/koseki (updated 2026-11-01).

Historical auction data, not investment advice. Prices are premium-inclusive USD where the buyer's premium is recorded. Figures marked † are hammer prices (buyer's premium not included); ‡ marks a price whose basis is not yet verified. Non-USD results are converted at the sale month's rate.