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The Large-Format Phra Somdej Wat Rakang Kositaram of Somdej Phra Buddhacharn (Toh Prommarangsi) is regarded as the "Emperor of Amulets" due to its supreme value and highest auction prices among all amulets.,This style also has many unique mold characteristics, or what are called mold defects, that differ from other Phra Somdej Wat Rakang types, presenting a puzzle about its design. Understandingtheorigins of these mold defects, which were previously recognized only through memorization, could enable a more reasoned evaluation of Somdej Wat Rakang by Somdej Toh and accelerate learning about various mold defects. At this point, "The Science of Phra Somdej" invites readers to help unravel the mystery of the "head and hair" of the Large-Format Phra Somdej Wat Rakang and why it differs from other types.
The first volume of the Amulet Commentary by Triyampawai divides the main type of Phra Somdej Wat Rakang (equivalent to what is popularly called Large-Format today) into six subtypes based on distinctive features: Khueng type, Throng type, Chalud type, Pom type, Santat type, and Yom type. , (Two other types mentioned—Leuan and Khueng Sen Dai—are said by Triyampawai to exist only for Phra Somdej Wat Bang Khun Prom.) Triyampawai also classifies the shape of the head (Phra Si-ra or crown) and face into four types:Matum fruit shape, oval shape, sharp shape, and stout shape.,andthe hair (Phra Khet—meaning the uppermost part of the head symbolizing enlightenment) into three types by shape: thespike type, the slender type, and the arch-penetrating type."The Science of Phra Somdej" respectfully summarizes this for study guidance on Somdej Wat Rakang of Somdej Toh as follows... Matum fruit shape is characterized by a well-proportioned round shape resembling a matang fruit, slightly broad. This is considered the most beautiful and distinct type. Truly sharp specimens show eye groove details: on the left side, a small rounded bump resembling an ivory grain with a surrounding groove, positioned lower than the right eye and angled sharply to the left; on the right side, a truncated diamond shape without a protruding eyeball bump. This Matum fruit type is very rare.
The right mold frame (figure side) is a raised line running continuously close to the lowest arch line. Defect 3
The arch of the glass house is a rather large raised line resembling a split rattan. Inside the arch line are vertical lines from the base. The mold surface outside the arch slopes slightly. Defect 4 The face resembles a matang fruit shape. Defect 5 Both ears are present but sometimes faintly attached.
Defect 6 At the curve where the arm joins the shoulder, the right shoulder is thicker than the left. Defect 7The Buddha's left knee protrudes higher than the first base layer.Defect 8The right knee protrudes lower than the first base layer.Defect 9
The figure tilts slightly to the right, while the first, second, and third base layers tilt left alternately with the figure's tilt. Defect 10 The wall surfaces between the three base layers vary in height: between the first and second bases they are level with the mold surface, but between the Buddha's legs and first base, and between the second and third bases, the wall surfaces are higher than the mold surface.Defect 11The outer surface outside the arch is slightly higher than inside, almost invisible unless the amulet is tilted to reveal a line.
Defect 12
The torso is cylindrical (unlike the V shape in other types). Defect 13 The second base (lion base) line is a thinner raised line than all other types. Defect 14
The torso lines, arm lines, and base lines are thinner and sharper than all other types. For more reading, visit the Phra Somdej Science page by Police Major Komsan Sanongpong. Thanks to Assistant Professor Rangsarn Tosuwan for kindly providing images of another master Large-Format Phra Somdej Wat Rakang specimen for educational purposes. Also thanks to the current owner of this beautiful and well-preserved Large-Format, third subtype, tubular chest Phra Somdej Wat Rakang (the anonymous expert divides into four subtypes: principal Buddha image, V-chest, tubular chest, and arch-penetrating hair; subtypes 1 and 3 are rare, subtype 2 is most common, and subtype 4 is moderately common). This specimen is sharply and deeply pressed, soft in texture, without cracks commonly found in hard amulets with lacquer coating, with a white-brown hue and slightly separated mold frame edges. All three authentic Phra Somdej features are present: bud grains, worm trails, and needle hole porosity. The mold shape matches the treatise: cylindrical torso slightly flaring at the bottom, deep arm pits, and a consistent tilt from torso to neck, head, and hair to the left side—a hallmark of the Large-Format. The back combines smooth, condensed, and betel-nut sheath styles, with wrinkles, peeling marks on all four edges, and oil-like stains visible front and back. This specimen serves as an excellent model for studying Phra Somdej Wat Rakang.
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Police Major Komsan Sanongpong, former forensic police officer. Facebook page
– Phra Somdej Science
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