Navajo Classic Twill Weave Manta, 48 x 48. Estimate: $40,000-$60,000. ← Previous Navajo Classic Twill Weave Manta, 48 x 48. Estimate: $40,000-$60,000. Navajo Classic Twill Weave Manta, 48 x 48. Estimate: $40,000-$60,000.