Phra Ruang Lang Rang Puern (Gun-Groove Back) amulet was created at Wat Phra That Doi Suthep, Chiang Mai, in B.E. 2515 (1972) during the sacred consecration ceremony of the Phra Buddha Sihing replica. This particular version, known as the “popular block with fanged teeth” (Blok Niyom Fan Nhoo), is considered one of the most desirable and collectible molds of this series.
There are two main types of this amulet:
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Raised Chedi (Stupa) back – also referred to as “floating chedi”
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Sunken Chedi back
This amulet features a standing royally-attired Buddha image, within a decorative arch frame, known as Ruang Song Kruang. The right hand is raised in a gesture of blessing (abhaya mudra), while the left hand hangs downward, palm open and facing outward. The fine details of the robe, face, and headdress reflect Khmer Bayon-style art, featuring a pointed “Chibo crown” (conical headdress) and intricate sash around the waist.
The reverse of the amulet contains the signature “gun groove” lines, earning its name Phra Ruang Lang Rang Puern. This detail and styling are highly sought after among collectors and spiritual practitioners.
The amulet was blessed on April 9, 1972, in one of the most significant ceremonies in Northern Thailand, presided over by members of the Thai Royal Family:
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Somdej Phra Srinagarindra, the Princess Mother, and
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HM Queen Sirikit (then Queen of Thailand)
Over 108 top monks from around the country joined the consecration ceremony, including legendary figures such as:
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Luang Pu Koon, Wat Ban Rai
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Luang Pu Waen, Wat Doi Mae Pang
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Luang Por Kasem Khemako, Lampang
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Luang Phor Guay, Wat Kositaram, Chainat
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Luang Phor Toh, Wat Pradoochimplee, Bangkok
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Kruba Chum, Kruba Kam Saen, and many others
This amulet is highly respected for protection, authority, and spiritual power, making it a prized piece for both collectors and faithful devotees.








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