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Image courtesy Helmuth Stone Gallery

Auction result

Rock Formation

Thomas Koether (b. 1940)

Unsold / did not meet reserve

Estimate $200 – $400 (≈ £148 – £297) (≈ €172 – €344)

Offered at Helmuth Stone Gallery and passed / bought in. Counted in the artist’s sell-through rate; no price, so not in price averages.

Auction history of this work: offered 2 times ↓

Medium
Oil · Works on paper all oil results →
As published: “Oil on Paper”
Support
Paper
Category
Oil paintings
Dimensions
10.5 x 14.25 in
Auction house
Helmuth Stone Gallery
Sale
Premier Fine Art Auction (401037)
Date
January 11, 2026
Location
Sarasota, Florida, United States
Lot
191
Estimate
$200 – $400 (≈ £148 – £297) (≈ €172 – €344)
Source
Auction house helmuthstone.com ↗
Retrieved Sep 30, 2026

View original lot page ↗

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Provenance trail: auction history of this work

Offered twice between 2022 and 2026 · sold 0 · bought in / unsold 2

  1. Rock Formation, Helmuth Stone Gallery 2022

    Jan 9, 2022 · Helmuth Stone Gallery

    Important Old Masters, Fine Art, Antiques, lot 167

    Bought in / unsold · est. $250 – $500

    As catalogued

    Thomas Koether, “Rock Formation”

    Oil on Paper

    10.5 x 14.25 in

  2. Rock Formation, Helmuth Stone Gallery 2026

    Jan 11, 2026 · Helmuth Stone Gallery this result

    Premier Fine Art Auction, lot 191

    Bought in / unsold · est. $200 – $400

    As catalogued

    Thomas Koether, “Rock Formation”

    Oil on Paper

    10.5 x 14.25 in

Appearances are linked when the photographs match and the size, medium and title agree (match confidence 92%). Casts and prints are linked only when the cast or impression number also matches. Price changes compare each sold price with the previous one (in USD at each sale’s exchange rate when the currencies differ). Details are shown as each house published them.

Similar size by this artist

Works by Thomas Koether with a longest side of about 36.2 cm (14.3 in) (±20 %).

Study for Primavera by Thomas Koether, Oil on Paper, offered Sep 2026
Study for Primavera
Oil · Paper
Helmuth Stone Gallery · Sep 13, 2026Unsold / did not meet reserve
Head Rock by Thomas Koether, Oil on Paper, offered Jun 2025
Head Rock
Oil · Paper
Helmuth Stone Gallery · Jun 22, 2025Unsold / did not meet reserve

All Thomas Koether results of this size →

More results for Thomas Koether

Ibiza Night 4 by Thomas Koether, Oil on Canvas, offered Sep 2026
Ibiza Night 4
Oil · Canvas
Helmuth Stone Gallery · Sep 13, 2026Unsold / did not meet reserve
Study for Primavera by Thomas Koether, Oil on Paper, offered Sep 2026
Study for Primavera
Oil · Paper
Helmuth Stone Gallery · Sep 13, 2026Unsold / did not meet reserve
First Fire by Thomas Koether, Oil on Canvas, offered Jul 2026
First Fire
Oil · Canvas
Helmuth Stone Gallery · Jul 12, 2026Unsold / did not meet reserve
First Monolyth by Thomas Koether, Oil on Paper, offered Jul 2026
First Monolyth
Oil · Paper
Helmuth Stone Gallery · Jul 12, 2026Unsold / did not meet reserve

All results for Thomas Koether →

Also in this sale

Premier Fine Art Auction · Helmuth Stone Gallery · Jan 11, 2026

All Helmuth Stone Gallery results →

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