Pra Pim Chiang Saen Ancient Amulet Kru Wat Tap Khaw – Macro Close Up of the Aspects Muan Sarn Sacred Clay. A perfect study reference pice, as Ongk Kroo teacher for the study of the Muan Sarn clay of the Immortal Pra Somdej Wat Rakang Kositaram of Somdej Pra Puttajarn (Dto) Prohmrangsri, Wat Rakang Kositaram.