Martin Grelle, Snake River Culture, oil, 48 x 60. Estimate: $300,000-$400,000.

Martin Grelle, Snake River Culture, oil, 48 x 60. Estimate: $300,000-$400,000.

Martin Grelle, Snake River Culture, oil, 48 x 60. Estimate: $300,000-$400,000.

Martin Grelle, Snake River Culture, oil, 48 x 60. Estimate: $300,000-$400,000.

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