> Source: https://www.openingbid.art/artist/yamaguchi-koji · updated 2026-11-03

# YAMAGUCHI Koji

YAMAGUCHI Koji is an artist with 13 auction lots recorded since 2024, median price $3,662. Some sold prices are not yet verified as premium-inclusive or hammer, and are marked on this page.

A work by YAMAGUCHI Koji is recorded as sold in 2026 for $5,328; whether the price includes the buyer's premium is not yet verified, according to OpeningBid's index of auction results.

## What is a YAMAGUCHI Koji work worth?

Across 13 sold lots tracked by OpeningBid, the median price of a YAMAGUCHI Koji work is $3,662.

The median YAMAGUCHI Koji painting sells for $4,060 across 12 lots.

The median YAMAGUCHI Koji work on paper sells for $322 across 1 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 | 12 | $4,060‡ | $5,568‡ | — | 2026-10-25 |
| Works on Paper | 1 | $322‡ | $322‡ | — | 2025-04-12 |

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

## Price by size

### Paintings

| Size | Sold lots | Typical range (p25–p75) | Median | Record |
|---|---|---|---|---|
| medium (50–120 cm) | 8 | $3,191–$4,639‡ | $4,069‡ | $5,568‡ |

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

Size is the work's longest edge. Cells appear only with at least 5 sold lots.

## Notable results

| Medium | Year | Price |
|---|---|---|
| Paintings | 2025 | $5,568‡ |
| Paintings | 2026 | $5,328‡ |
| Works on Paper | 2025 | $322‡ |

‡ 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 YAMAGUCHI Koji worth?

Across 13 sold lots tracked by OpeningBid, the median price of a YAMAGUCHI Koji work is $3,662. The median YAMAGUCHI Koji painting sells for $4,060 across 12 lots. The median YAMAGUCHI Koji work on paper sells for $322 across 1 lots. Some prices are not yet basis-verified (premium-inclusive or hammer).

### What is the average price of a YAMAGUCHI Koji painting?

Based on 12 sold lots tracked by OpeningBid, the median auction price of a YAMAGUCHI Koji painting is $4,060. Some prices are not yet basis-verified (premium-inclusive or hammer).

### What is YAMAGUCHI Koji's most expensive painting?

The highest price recorded at auction for a YAMAGUCHI Koji painting is $5,568. Whether that record price includes the buyer's premium is not yet verified.

### What is YAMAGUCHI Koji's auction record?

YAMAGUCHI Koji's auction record is $5,568, set in 2025. Whether that record price includes the buyer's premium is not yet verified.

---

Data last updated 2026-11-03. OpeningBid tracks 15,596,131 auction lots from 579 auction houses, refreshed nightly.

Cite this page as: OpeningBid, “YAMAGUCHI Koji auction prices”, https://www.openingbid.art/artist/yamaguchi-koji (updated 2026-11-03).

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.