(Mongkut Siam; Kherụ̄̀xngrāchxis̄riyāp̣hrṇ̒ xạn s̄ūngs̄̀ng thī̀s̄ud k̄hxng pratheṣ̄thịy). Instituted in 1869. Second Period (1873-1941). The centrepiece insignia in silver, mounted to a base in silver with petals in alternating red and green enamels, gilt reverse, measuring 48 mm (w) x 72 mm (h) inclusive of its tri-leaf suspension, with loop, intact enamels, traces of gilt remains on the centrepiece, on its original full-length neck ribbon, extremely fine.
Footnote: The Most Noble Order of the Crown of Thailand was instituted on December 29, 1869 by King Mongkut Rama IV of The Kingdom of Siam (now Thailand) for Thais, the royal family, governmental employees, and foreign dignitaries, for their outstanding services to the Kingdom of Thailand. The order originally had seven classes and was awarded in five grades: Grand Cordon, Knight or Dame Grand Cross, Knight or Dame Commander, Commander, Companion and Member, plus a VI Class Gold Grade and VII Class Silver Grade medal. An eighth version, the Special Class, was added by King Rama VI in 1918.