How we price Yiwu vintage pu-erh at auction
In the aged sheng pu-erh market, a single Yiwu cake can trade for sums that baffle outsiders. Yet the pricing logic is rarely made explicit. A three-character auction lot label tells a collector almost nothing. Our annual methodology note opens the black box: every vintage price we publish is weighted by provenance depth, pressing-house reputation, and neifei integrity.
The starting point is provenance documentation. We trace every lot from the original farmer cooperative or tea merchant through storage location and key hands. A cake stored in Guangzhou’s humid warmth develops different character — and different value — than one kept in Kunming. Where records are thin, we downgrade confidence. Full-chain documentation, especially when backed by visible storage records and signed transfer notes, adds a premium of 10%–20% to the baseline valuation.
Pressing-house premiums are the second pillar. We assign a coefficient to each factory or private press based on historical auction performance, batch consistency, and expert tasting notes. For instance, a 2005 Yi Chang Hao shēng chá (生茶) from the Mengsa workshop routinely commands a 15% coefficient over a virtually identical cake from a lesser-known press. These coefficients are recalibrated each year using data from shop.puerh.app, where detailed lot records are publicly accessible.
Neifei (内飞) verification is the most technically demanding of the three factors. Embedded in the cake itself, these tiny tickets are the tea’s inked fingerprint. Our specialists analyse paper stock, ink composition, stamp style, and placement against authenticated reference libraries. A cake with a confirmed original neifei and an uncut wrapper earns full authenticity points; one with a shaved or replaced neifei loses up to 30% of its potential market value. The annual methodology incorporates new forgery detection techniques, many of which are taught in the authentication masterclass at tea.school.
Behind these calculations sits a team of seasoned tea professionals who revisit every parameter with each auction season. The methodology is not static — it adapts to shifting taste preferences, storage trends, and newly uncovered historical records. Publishing our reasoning each year is meant to make an opaque market a little more legible: this note describes how a price was arrived at, not what a cake will be worth next year. Future updates will add regional vintage indexes and a live tracking feed for active auctions.
What changes
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Receive the latest auction price benchmarks for Yiwu vintages each year
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Access updated provenance documentation guidelines
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Compare pressing-house premiums across 2000–2025 vintages
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Learn to identify neifei inconsistencies with our verification tools
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Engage directly with resident tea experts for personalised clarifications