I found this 1942 D silver nickel a while ago in my pocket change and this was before I really knew anything about coins. But, even though I didn't know it was silver, I still kept it because it was minted during WWII and had a nice patina. I threw it in a box with alot of other worthless old coins I had untill I learned about silver nickels and that I had found one. So, I placed it in a plastic holder, which it has been stored in for about a year now, and I want to know if it is worth anything above melt value. Any ideas?