You've got to be a bit more specific on how it is stamped wrong before we can assign a premium over silver value on the coin.
A little under $2.
as of today silver prices approx 1.01usd
Please check again and post a new question. Buffalo nickels were struck from 1913 to 1938. Any nickel dated 1943 would be a familiar Jefferson nickel.
Values for a circulated war nickel are $1.00-$2.50 depending on the grade
A 1943 S nickel is worth $1.25 in G-4, $1.50 In F-12, $4.00 in EF-40, $7.00 in MS-60.
All US nickels minted in 1943 have a large mint mark on the back.
It is 35% silver and in circulated condition it is worth about $1.50 in melt.
That's a silver war nickel. On average, it's worth about $2, or upwards of $4 if uncirculated.
Check that coin again. The last year for buffalo nickels was 1938.