Westward Journey Nickel
2004 kept the classic left-facing Jefferson portrait, while 2005 introduced a dramatic close-up of Jefferson with 'Liberty' in his own handwriting. Four one-year designs celebrating Lewis and Clark: the Peace Medal handshake and the keelboat (2004), then the American bison and the 'Ocean in view!' coastline (2005).
Composition
Key dates to look for
2004-S Westward Journey
$4–8 eachProof versions of both 2004 designs came only in collector sets
2005-S Westward Journey
$4–8 eachProof versions of both 2005 designs came only in collector sets
Valuable varieties & errors
2005-D Speared Bison
scarceA deep gouge in a Denver die left a raised line running through the bison, so struck coins look like the animal has been speared. It became an instant media sensation and remains the most famous modern nickel variety.
Error types found on this series

Doubled Die (Obverse)
The front design shows a second, shifted image because the die itself was made doubled.

Off-Center Strike
The blank wasn't centered when struck, so part of the design is missing and part of the coin is blank.

Grease-Filled Die (Struck Through Grease)
Grease and debris packed into the die's recesses blocked part of the design, leaving weak or missing details.
Machine Doubling
The die bounced or chattered at the moment of striking, smearing a flat shelf-like second edge onto the design.

Die Crack
A crack in the die fills with metal during the strike, leaving a thin raised line on the coin.

Die Break
A piece of the die face broke away mid-design, leaving a raised unstruck blob inside the coin's design.
Real photos where available (credits); others are illustrations.