Coins minted in the Year 1846

What happended in 1846?
Monarch  is Queen Victoria. Prime Minister is Robert Peel (Conservative) then on 30 June it is Lord John Russell (Whig). US President is James K. Polk (D-Tennessee). In America the Liberty Bell is cracked while being rung for George Washington's birthday. In the UK railways are being built everywhere and Parliament rules all new railways in Great Britain should be built to standard gauge.
Obv Rev Cat Coin
  Sovereigns 1846 Gold Sovereign