I check my dug nickels for the war nickel mint mark. If they're not a War nickel, they are just nickels; low value clad. I had a nice, deep struck '38 in my change a couple weeks ago. Genuine, aged, dark patina too! I showed it to a check-out lady when I spent it. I think she kept it. Wheat pennies are worth a few times face; sometimes more for key/semi-key dates & marks.