Market Data/Unknown
The Unknown Auction Market
391 unknown lots have sold at auction since 2006, for a combined $89.2M in hammer prices. Yearly volume, transaction counts, and average prices below are computed from the Art Market API auction database.
Sold lots
391
since 2006
Total volume
$89.2M
hammer prices, USD
2025 average price
$74,673
2006peak $15.7M2025
Yearly performance
| Year | Lots sold | Total volume | Average price |
|---|---|---|---|
| 2025 | 3 | $224,019 | $74,673 |
| 2024 | 11 | $1.0M | $93,585 |
| 2023 | 44 | $15.3M | $347,926 |
| 2022 | 32 | $5.3M | $166,676 |
| 2021 | 44 | $6.3M | $144,203 |
| 2020 | 22 | $4.8M | $218,356 |
| 2019 | 36 | $15.7M | $435,512 |
| 2018 | 46 | $6.2M | $135,135 |
| 2017 | 28 | $13.7M | $488,429 |
| 2016 | 24 | $1.9M | $79,331 |
| 2015 | 12 | $1.7M | $141,306 |
| 2014 | 13 | $5.4M | $413,522 |
| 2013 | 3 | $82,726 | $27,575 |
| 2012 | 10 | $1.5M | $152,413 |
| 2011 | 12 | $1.2M | $96,389 |
| 2010 | 7 | $1.7M | $248,544 |
| 2009 | 4 | $477,097 | $119,274 |
| 2008 | 15 | $2.9M | $196,487 |
| 2007 | 24 | $3.7M | $152,321 |
| 2006 | 1 | $69,843 | $69,843 |
Query this data programmatically
Every figure on this page is computed from the Art Market API's auction database.Lot-level unknown auction results is available as structured JSON, filterable by date, price, category, and more.
curl "https://api.artmarketapi.com/api/v1/auction_records?category=unknown&limit=10" \
-H "Authorization: Bearer amapi_live_your_key_here"Create a free account — 100 free credits, no card required — or read the API documentation.