Strange thing about decimals is that the mass media seem to control the prices of the coins and the market selling price - just the mearest hint that a coin might be a bit valueable can send demand soaring and double the price of a coin overnight .
Take the 2015 ship £2 a really low mintage and quite hard to find yet because the mass media have not publicised the coin the coin ,no demand, same with the underground £2 and the sufragette 50p .
It seems we live in a society where we are told something is rare by the press and suddenly it is , very strange