Yes the worlds most expensive gold coin was in Dublin during march, It was on display in the Royal Hospital Kilmainham Dublin, Here you can see a video of this gold coin,
The coin has an amazing history, and it was on its European tour, which has just ended.
You can read all about the 1933 Gold double eagle here
The last 1933 gold double eagle to go on auction, was sold for more than $ 7million.
This Gold Coin on Tour now is the property of the Smithsonian Institution in Washington.
and it will never be sold, hence given speculation to that the coin could be now valued up to $20 million.