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Later in the year 2436 BE,[b 1] the king[b 2] transferred the Seal of Illuminated Flying Castle to the Director General of the Department of Education as his official seal and granted an old seal, the Seal of the God of Fire Riding Upon a Rhino (see figure 35), to the Secretary of State for Public Instruction as his official seal for him to use in transmitting the king’s commands to various recipients together with the Seal of Boundary Markers With a Wheel of Law which was used for transmitting the king’s commands to Buddhist priests. (The Seal of the God of Fire Riding Upon a Rhino is now at the Royal Museum.)[b 3]
In the reign of King Rama VI, the Seal of the God of Fire Riding Upon a Rhino was abolished and replaced by a newly created Seal of a Boundary Marker With a Wheel of Law for the reason that, after furnishing the Secretary of State for Public Instruction with the traditional title attached to his position (that is, the title of Čhāophrayā Phrasadetsurēnthrāthibǭdī, the holder of which is said by the Charter on the Use of Seals to carry the Seal of Boundary Markers With a Wheel of Law), HM King Mongkutklāo Čhāoyūhūa found that his seal depicted a discus on a flying castle flanked by a boundary stone on each side (see figure 36), with which the king was not pleased, he then ordered the Seal of Boundary Markers With a Wheel of Law to be created anew. The newly created Seal of a Boundary Marker With a Wheel of Law is round in shape, containing a picture of a wheel of law, which is a chariot wheel, in the middle of a boundary marker, with du sa ni ma, the heart of the Four Noble Truths,[b 4] written in the Khǭm script,[b 5] floating upon the boundary stone (Announcement on the Official Seals of the Secretary of State for the Royal Household and the Secretary of State for Public Instruction, dated 2456 BE).[b 6]
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