There are probably more variations of the 10-Baht coin in circulation than any other paper bill or coin. The 10-Baht piece is a favorite for commemorative editions. Shown below are the ones we've managed to collect over the last few years.
The 10-Baht coin - Kanchanapisek version.
The Kanchanapisek coin was issued to commemorate the king's 50th anniversary on the throne. So many of these have been issued that they are almost as common as the regular coins.
10-Baht Coin - Commemorative Version
Issued to commemorate the 40th anniversary of the Thai Commerce Department in 2000.
10-Baht Coin - Commemorative Version
Issued to commemorate the International Rice Award given to His Majesty the King in 1998.
10-Baht Coin - Commemorative Version
Issued to commemorate the 100th anniversary of the Land Department in 2001.
Old 10-Baht bank note - front
The 10-Baht coin was first introduced in the 1990s, but a few years back, a senior Thai politician had the idea that the introduction of the coin 'devalued' the Baht and contributed to inflation. So, the 10-Baht note was re-introduced for a short time, until the politician fell from power.
You may still encounter some 10-Baht notes, especially outside of Bangkok.
Old 10-Baht paper note - Back