Maria and Julian Martinez, San Ildefonso Polychrome Plate, 13d. Estimate: $30,000-$50,000. ← Previous Next → Maria and Julian Martinez, San Ildefonso Polychrome Plate, 13d. Estimate: $30,000-$50,000. Maria and Julian Martinez, San Ildefonso Polychrome Plate, 13d. Estimate: $30,000-$50,000.