The one on the left is definitely a fantasy piece, but the Chien Lung coin on the right doesn't look genuine either. Something's not right about the characters especially 'chien' and 'pao'; the character strokes are not distinct and look odd. A good replica of the original, in my opinion. I have no idea what "TS" is, 'Tourist souvenir' perhaps? Counterstamping would destroy a coin's value, unless it's done by governments to change its host coin's value or usage.