Dating coins from thailand
Beginning at 21.75 baht = one pound sterling, the currency rose in value until, in 1908, a fixed peg to the British pound sterling was established of 13 baht = one pound.This was revised to 12 baht in 1919 and then, after a period of instability, to 11 baht in 1923.Instead, a so-called "bullet" coinage was used, consisting of bars of metal, thicker in the middle, bent round to form a complete circle on which identifying marks were stamped., 2, and 4 baht in gold. Between 18, foreign trade coins were also stamped by the government for use in Thailand. These were silver 1 sik, 1 fuang, 1 and 2 salung, 1, 2, and 4 baht, with the baht weighing 15.244 grams and the others weight related.Tin 1 solot and 1 att followed in 1862, with gold , 4, and 8 baht introduced in 1863 and copper 2 and 4 att in 1865.
Its currency value was originally expressed as that of silver of corresponding weight (now defined as 15 grams), and was in use probably as early as the Sukhothai period in the form of bullet coins known in Thai as phot duang (Thai: ).After 1857, notes for 20 and 40 ticals were issued, also bearing their values in Straits dollars and Indian rupees.Undated notes were also issued before 1868 for 5, 7, 8, 12, and 15 tamlueng, and 1 chang. In 1892, the treasury issued notes for 1, 5, 10, 40, 80, 100, 400, and 800 ticals, called "baht" in the Thai text.In 2008, the Ministry of Finance and the Royal Thai Mint announced the 2009 coin series, which included changes in materials to reduce production costs as well as an update of the image on the obverse to a more recent portrait of the king.The two-baht coin, confusingly similar in color and size to the one-baht coin, was changed from nickel-clad low-carbon steel to aluminium bronze.