Pim Ok Yai (พิมพ์อกใหญ่)

The Phra Khun Phaen Pim Ok Yai (Large Chest mold) from Wat Ban Krang is universally regarded as the absolute standard and supreme classic of the Suphan Buri school. The Buddha is seated inside a five-sided frame within the Sum Ruean Kaew arch in the Mara Wichai (Subduing Mara) posture.

The Prototype of Khun Phaen

Created alongside the Pim Song Pol Yai, the Pim Ok Yai is regarded as one of the prototype origins of the later Khun Phaen tradition. It predates the famous glazed Khun Phaen amulets of Wat Yai Chaimongkol in Ayutthaya. While both share an essentially identical artistic structure, the major difference lies in the material: Ban Krang examples are made from rough, mineral-rich baked clay (Nuea Din Phao), whereas Wat Yai Chaimongkol versions utilize pale sacred powder mixed with clay and a glazed surface.

Authenticity Markers (Tamni)

The Pim Ok Yai measures approximately 4.5 cm in height and 3 cm in width. Authentic pieces display several distinct markers critical for identification:

• "เกศทะลุซุ้ม" (Ushnisha penetrating the arch): A long, sausage-like topknot extends upward, passing right through or resting heavily on the top of the crystal arch.
• The hairline bends sharply on both sides.
• The eyes appear elongated like grains of rice, with elevated outer corners.
• The left ear extends longer and curls more prominently than the right side.
• The chest (Ok Yai) is broad, thick, and highly prominent, radiating strength.
• The fingertips of the left hand curve upward distinctly.
• The signature "รอยว่านหลุด" (decayed herb holes) are scattered naturally across the coarse surface.

Supreme Metta & Protection

While its origins as a military amulet under King Naresuan guarantee profound Kong Grapan and Klaew Klaad, the Pim Ok Yai is most celebrated for its extreme Maha Niyom (Loving Kindness) and Maha Saneh (Attraction) properties. Many veteran collectors consider this specific mold to be one of the strongest charm and commander-class amulets from the Ayutthaya period.