1941 Jefferson nickel brown in color weighs 4.7 grams didn't know if this would be an error also no mint mark seems to be no Nickel in this nickel Brown all the way through
Hey willy. You need to start reading @paddyman98 's metal detecting posts. He finds lots of brown nickels and clad coins. Take a look at his pics. They'll help you recognize this type of environmental damage
Dug nickels come in a variety of colors that also appear on dug clad. Brown and Black are the most common but I also have Red, Bright Green, Orange and Blue. It all depends on the chemical composition of the dirt it was laying in all those years. There are active collectors of Black Buffalos. In my own case I'm working on the entire set of dug buffalos but I'll take any color until I get it done. If you take a dug nickel and carry it in your pocket for a few months it creates a cameo effect that is stunning. I've found a few of these in circulation but there have been more jeffersons than buffalos for obvious reasons.
Their are "black" nickels ..caused from the annealing process, when they heat up planchet to soften the metal before strike..sometimes the cleaning, washing process to remove tarnish from the relaxing of metal doesn't do such a great job..I've one from 1958.worth about75$. MS6,,this is,, I agree a dug up find..but still cool to have..