THAILAND: Rama IV, 1851-1868, AV ¼ baht (salung) (4.33g), Cr-165, Mongkut mark, struck during the reign of Rama V, 1868-1910, EF, R. The excess weight is additional gold caused by this piece having once been mounted onto a button, a common phenomenon in Thailand.
Estimate: 900- 1,100 USD