| Issuer | Thailand |
| Year | 1999 |
| Type | Commemorative circulation coin |
| Value | 20 Bahts (20 บาท) |
| Currency | Baht (1897-date) |
| Composition | Copper-nickel (75% Copper / 25% Nickel) |
| Weight | 15 g |
| Dimensions | 32 mm |
| Thickness | |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | Y#355 |
| Obverse description | Bust of King Rama IX front facing |
| Obverse script | Thai |
| Obverse lettering | รัชกาลที่ ๙ ประเทศไทย (Translation: Rama IX Thailand) |
| Reverse description | Symbol of State Audit Office: Balanced scales in front of Thai constitution placed on a two-tiered phan, surrounded by heptagonal design, surrounded bu inscriptions. |
| Reverse script | Thai |
| Reverse lettering | ครบ ๘๔ ปี สำนักงานตรวจเงินแผ่นดิน ๑๘
กันยายน ๒๕๔๒
๒๐ บาท (Translation: 84 Years [of] State Audit Office 18 September [BE]2542 20 Baht) |
| Edge | Reeded |
| Mint | |
| Mintage | 2542 (1999) - (fr) ๒๕๔๒ - |
| Catalog ID | 8969258370 |
| Comments |
