| Issuer | Thailand |
| Year | 1888-1905 |
| Type | Standard circulation coin |
| Value | 1 Siao = 1/4 Fuang = 1⁄32 Baht |
| Currency | Baht / Tical (1869-1897) |
| Composition | Bronze (95% Copper / 4% Tin / 1% Zinc) |
| Weight | 11.3 g |
| Dimensions | 30 mm |
| Thickness | 2 mm |
| Shape and Technique | Round Milled |
| Orientation | |
| Engraver(s) | |
| In circulation to | 17 May 1909 |
| Reference(s) | Y#23 |
| Obverse description | Portrait of King Rama V facing left |
| Obverse script | Thai |
| Obverse lettering | จุฬาลงกรณ์ ป.ร. พระจุลจอมเกล้าเจ้ากรุงสยาม |
| Reverse description | Phra Siam Devadhiraj facing right, holding a spear, seated on a shield which divided into three parts; the three-headed elephant on the top represents Siam; The elephant facing left on the bottom left represents Lan Xang; and crossed Kris and Warangka represent Malay, inscriptions divided left and right of the figure and date at the bottom below the figure |
| Reverse script | Thai |
| Reverse lettering | หนึ่ง เซียว
๑๒๒ (Translation: One Siao (RS)122) |
| Edge | Plain |
| Mint | Bangkok, Thailand(1860-2002) Hamburgische Münze, Germany(801-date) Heaton and Sons / The Mint Birmingham (Heaton and Sons / The Mint Birmingham Limited),United Kingdom (1850-2003) |
| Mintage | 1249 (1888) - ๑๒๔๙; coin alignment; Hamburg Mint - 109 (1890) - ๑๐๙; medal alignment; Birmingham Mint - 5 120 000 114 (1895) - ๑๑๔ - 115 (1896) - ๑๑๕; Hamburg Mint - 118 (1899) - ๑๑๘; Hamburg Mint - 119 (1900) - ๑๑๙; Royal Thai Mint; elder portrait - 735 000 119 (1900) - ๑๑๙; Royal Thai Mint; young portrait - 121 (1902) - ๑๒๑; Hamburg Mint - 2 797 000 122 (1903) - ๑๒๒; medal alignment; Birmingham Mint - 2 323 000 124 (1905) - (fr) ๑๒๔ - |
| Catalog ID | 3687353210 |
| Comments |
