1941, Bang Pa-In Palace issue, 2s. (4x), 15s. (15x) and 10 baht (12x), mostly bicoloured imperforated essays in a unissued design (format), exceedingly rare, not recorded in Anachai Rattakul study of the Thai Mail 1836-1943. Only one other set of 51 ex. has been  recorded until now and was auctioned in October 2012 for EUR 11.500