I have swapped my coin a long time ago but now decided to check the dimensions when organizing Albanian coins. My coin weight is 4,46 g, diameter 21,53 mm and thickness 1,83 mm. According to Numista the weight should be 6 g, diameter 21 mm and thickness 1 mm. So my coin is way too light but I don't see any evidence that it is a counterfeit. Could you test your coin and comment my coin. Photos here: