NOB- Britain news: The most expensive coin in the world was released in Britain. About 4 kg of gold and more than 6,400 diamonds were used to make this coin, making it the most valuable coin in the world so far. It is said that its value is around 23 million dollars which is Rs. 192 crores in Indian currency. And this coin was released as a symbol of Queen Elizabeth II. This highly valuable coin was released on the death anniversary of Queen Elizabeth 2.