Sei Koyanagui (1896–1948)
What is Sei Koyanagui’s work worth?
As of 2 November 2026, OpeningBid has recorded 21 auction results for Sei Koyanagui at 11 houses since 1998. Over the last 24 months the median price was $861 including buyer’s premium (middle half $614–$1,284, n=7). The auction record is $6,011 for La volière (2021, Sotheby's). Source: OpeningBid, an independent auction-results database.
| # | Work | Medium | Price | House | Sold |
|---|---|---|---|---|---|
| 1 | La volière | Oil on canvas | $6,011 | Sotheby's | Mar 2021 |
| 2 | Pichet fleuri, 1930 | Huile sur toile | $4,953 | Gros & Delettrez | Oct 2026 |
| 3 | Nu assis | Huile sur toile | $2,958 | Ader | Jun 2011 |
| 4 | ROSES ET ANEMONES | Oil on canvas | $2,856 | Cornette de Saint Cyr (Bonhams) | Jul 2015 |
| 5 | ROSES ET LYS | Oil on canvas | $2,666 | Cornette de Saint Cyr (Bonhams) | Jul 2015 |
| 6 | Two Fawns | Oil on canvas | $2,350 | Skinner (Bonhams Skinner) | Sep 2005 |
| 7 | Two Deer | Oil on canvas | $1,495 | Skinner (Bonhams Skinner) | May 1998 |
| 8 | Bouquet de fleurs | Huile sur toile | $1,478 | Ader | Apr 2026 |
| 9 | Femme au bouquet de roses, 1930 | Huile sur toile | $1,456 | Ader | Oct 2018 |
| 10 | FLEURS ET PAPILLONS, 1896 | Huile sur toile | $1,315 | Osenat | Mar 2012 |
| Medium | Sales | Median |
|---|---|---|
| Paintings | 17 | $1,315 |
| Size | Sales | Median |
|---|---|---|
| Medium (50-120 cm) | 13 | $1,478 |
Data as of 2 November 2026 · Source: OpeningBid, 21 results from 11 houses · How we compute these figures
Sei Koyanagui is a Japanese artist with 35 auction lots recorded since 1998, median price $1,089. Some sold prices are not yet verified as premium-inclusive or hammer, and are marked on this page.
A work by Sei Koyanagui sold in 2026 for $4,953, according to OpeningBid's index of auction results.
See the full Sei Koyanagui record on OpeningBid — images, provenance, fair estimates and free sale alerts.
View Sei Koyanagui on OpeningBid →What is a Sei Koyanagui work worth?
Across 20 sold lots tracked by OpeningBid, the median price of a Sei Koyanagui work is $1,089.
The median Sei Koyanagui painting sells for $932 across 17 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 |
|---|---|---|---|---|---|
| Prints & Editions | 1 | — | — | 0% | — |
| Paintings | 20 | $932‡ | $6,011 | 85% | 2026-06-17 |
‡ 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 |
|---|---|---|---|---|
| small (under 50 cm) | 5 | $460–$932‡ | $545‡ | $1,089 |
| medium (50–120 cm) | 12 | $614–$2,429‡ | $1,467‡ | $6,011 |
‡ 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 | 2021 | $6,011 |
| Paintings | 2015 | $2,856 |
The highest recorded result in each medium. See the full sale history on OpeningBid.
Frequently asked questions
What is a Sei Koyanagui worth?
Across 20 sold lots tracked by OpeningBid, the median price of a Sei Koyanagui work is $1,089. The median Sei Koyanagui painting sells for $932 across 17 lots. Some prices are not yet basis-verified (premium-inclusive or hammer).
What is the average price of a Sei Koyanagui painting?
Based on 17 sold lots tracked by OpeningBid, the median auction price of a Sei Koyanagui painting is $932. Some prices are not yet basis-verified (premium-inclusive or hammer).
What is Sei Koyanagui's most expensive painting?
The highest price recorded at auction for a Sei Koyanagui painting is $6,011.
What is the average price of a medium Sei Koyanagui painting?
Based on 12 sold lots, the median auction price of a medium Sei Koyanagui painting (medium (50–120 cm)) is $1,467, according to OpeningBid's index of auction results. Some prices are not yet basis-verified (premium-inclusive or hammer).
What is Sei Koyanagui's auction record?
Sei Koyanagui's auction record is $4,953, set in 2026.
See the full Sei Koyanagui record on OpeningBid — images, provenance, fair estimates and free sale alerts.
View Sei Koyanagui on OpeningBid →