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- Estimate
- R500–R700 hammer ≈ $31–$43
- Result
- upcoming — 18 August 2026
- Performance
- Sale
- Strauss & Co — Running the Rule, Online · 18 August 2026
- Dimensions
- image size: 30 by 22cm; sheet size: 46 by 30,5cm, unframed
- Record ID
- TB-2026-10949790
- Record
- first seen 3 Aug 2026 · updated 5 Aug 2026 · source ↗
- Cite this record
- TB-2026-10949790 — https://thebasis.art/cite/TB-2026-10949790
Isaac Nkoana, Noncausa (The Xhosa Prophet). Strauss & Co, 18 Aug 2026, lot 4. estimate R500–R700, unsold at time of record. TheBasis.Art, TB-2026-10949790.
Sell probability TheBasis model · trained on recorded passes
66% chance this lot finds a buyer · market base rate 72%
Of the 92,019 held-out lots the model scored about 69%, 65% sold.
Modeled from the house, the sale type, the artist's record and the estimate's position — not a view on the work. Subscribers see each factor and its sample. See plans. Model data through 2025-09-15.
Cite this record permanent · resolvable · quotable
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Isaac Nkoana, Noncausa (The Xhosa Prophet). Strauss & Co, 18 Aug 2026, lot 4. estimate R500–R700, unsold at time of record. TheBasis.Art, TB-2026-10949790.
From the same sale Running the Rule · Aug 2026
| Lot | Artist | Estimate | Result |
|---|---|---|---|
| Birth of Moses | Azaria Mbatha | R2,000–R3,000 | upcoming |
| Church | Unknown Artist (20th/21st Century) | R1,000–R2,000 | upcoming |
| The Woman Who Loved and Was.../ Innocent from Accusation | Azaria Mbatha | R2,000–R3,000 | upcoming |
| Birth of Africa | Isaac Nkoana | R500–R700 | upcoming |
| Wondering | Solomon Roy Ndinisa | R200–R300 | upcoming |
| Kingdom of Heaven | Caiphas Nxumalo | R2,000–R3,000 | upcoming |
Comparable results nearest sold works, same medium & price band
| Artist | Lot | vs. estimate | Result USD, incl. premium | Sale |
|---|---|---|---|---|
| Walter Battiss | Dookoomonka | $69 | Strauss & Co, Oct 2025 | |
| Azaria Mbatha | Sou | Historia Auktionshaus, Aug 2022 | ||
| Tom Phillips | Mozart; Schumann 2 | Bonhams, Jan 2012 | ||
| Walter Battiss | Hair Everywhere | Strauss & Co, Oct 2024 | ||
| Nils Burwitz | Landmine | Strauss & Co, Sep 2019 | ||
| Walter Battiss | Birds | Strauss & Co, Oct 2024 | ||
| Walter Battiss | Riverside | Strauss & Co, Apr 2016 | ||
| Tom Phillips | Tom Phillips R.A. (British, B. 1937) | Christie's, Jun 2007 |
The closest sold results by price, artist, and medium — the appraiser's comp set, generated from the corpus. All figures converted to USD at current reference rates.