There have been six King Georges (I to VI). Which one did you have in mind?
King George V and VI would have had coins issued in many of the Commonwealth countries. Which country?
As far as general circulation coins are concerned, easily the most valuable Australian Penny is the 1930 Penny and the most valuable Halfpenny would be the 1923 Halfpenny.
1937 penny
The initials HP on the coins of most George VI coins from most Commonwealth countries would be the initials of the designer of the King George VI bust, T. Humphrey Paget.
the most valuable is the penny in the us has a head on the front and back hope this helped :) :) :) :) :)
The Queen Victoria, penny-red, plate 77, one penny stamp.
The rarest and most valuable Lincoln cent that isn't an error is the 1909-S with VDB on it. The rarest and most valuable error Lincoln cent is the 1943 copper penny.
The 1909-S V.D.B.
1970-S
The most valuable ones are the 1943 copper penny, and the even more rare 1944 steel penny.
At least for Lincoln cents, the most valuable by far is the 1909-S VDB.
the signed lotto ticket
The most valuable "Wheat Penny" is an error coin not a regular issue coin. The only known example of a 1943-D Lincoln cent that was struck on a bronze planchet by mistake instead of steel, sold in 2010 for a little more than 1.7 MILLION dollars. For regular issue coins the 1909-S VDB is still the King.