William Acheff, Jewel of the Southwest, oil, 44 x 26. Estimate: $70,000-$100,000. ← Previous Next → William Acheff, Jewel of the Southwest, oil, 44 x 26. Estimate: $70,000-$100,000. William Acheff, Jewel of the Southwest, oil, 44 x 26. Estimate: $70,000-$100,000.