Thailand Rama IV (1851-1865)Tamlung or 4 Baht ND(1865), Rev: Crown flanked by two umbrellas, Obv: Double lined frame with Diamond shape design, the word "Siam" in the middle of the pattern with Chinese characters, four reads ". Tae Dong Meng Strut ".Struck to commemorate the King’s 60th birthday. EXTREMELY RARE