What mainly determines the value is the rarity of the penny. A date where 3 billion were minted is never going to be worth as much as one with under 1 million.
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.
On the 1969 S penny a doubling of the print makes it very valuable ($35 000)
Penny
Nothing
1937 penny
The Queen Victoria, penny-red, plate 77, one penny stamp.
the most valuable is the penny in the us has a head on the front and back hope this helped :) :) :) :) :)
The most valuable ones are the 1943 copper penny, and the even more rare 1944 steel penny.
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.
Its maid of real copper
1970-S