W is the monogram of A. A. Weinman who designed both the "Mercury" dime and Walking Liberty half, so that's not enough information to identify the coin. Please see the Related Questions for more information.
About $27.
42cents
With no mint mark or an "S", about $1000. That could go up to $1500 with a CC mint mark.
1948 is a common date, even for S-mint cents. Its value ranges from 5 to 10 cents depending on condition.
With no mint mark, around $1000 With a D or S mint mark, $1000 to $1500 depending on condition. has a g mark
About $27.
42cents
Face value unless it has the mint mark "S".
With no mint mark or an "S", about $1000. That could go up to $1500 with a CC mint mark.
The value would depend on the condition and date of the coin.
1948 is a common date, even for S-mint cents. Its value ranges from 5 to 10 cents depending on condition.
With no mint mark, around $1000 With a D or S mint mark, $1000 to $1500 depending on condition. has a g mark
Look to the left and slightly above Miss Liberty's feet to see if there is a small S or D on the pedestal. That's the mint mark, and its presence affects the coin's value. (The M on the other pedestal is the designer's monogram.) Worn condition - $5 with no mint mark or an S, $7 with a D Moderate wear - $7 with no mint mark, $10 with an S, $17 with a D Slight wear - $12 with no mint mark, $22 with an S, $35 with a D
There's never been an E mint mark on US coins. Please check again - if there's a mint mark under the date it will be either D or S.
Assuming that "fairly new" translates to "moderate wear" or VF condition, the value of your coin depends on what mint mark if any is on the back under the eagle. With no mint mark, retail prices as of 09/2008 are around $260 With an S mint mark, $700 With a CC mint mark, $4900
With a CC mint mark, $850 to $1500 retail, depending on the amount of wear.With an S mint mark, $750 to $800
The "S" is a mint mark not a stamp, but the value is $2.00-$3.00 for circulated coins and a mint state coin is $7.00