Not sure the date but it looks errored to me whsts y'all thoughts please just looks different then a old warn out one.
My thoughts are you found a very well circulated/abused coin that has served it's designed job/function well for many years, but no retirement or 401K plans.
I learned a new numismatic technological term in this thread: Dryered. I must admit that I've never seen a Jefferson nickel in such a worn condition as the OP's. I recently searched through almost 20 pounds of coins. For my efforts I was rewarded with three Jefferson nickels—a 1941, 1946 and a 1957, all P. I found a lone 1957D cent. All were in fine or better condition.
A "dryer" coin and a "spooned" coin are often confused with one another. A "spooned" coin has been tapped along the edge with the underside of a spoon to cause it to expand so that the rims turn outward over the legend and/or devices near the rim. A "dryer" coin has been trapped between the drum and outer wall of a clothes dryer, and the continual rotation of the drum causes the edge to flatten somewhat like a spooned coin, but the biggest difference between the two is that the heat from the dryer tends to make all of the devices appear mushy. Chris
And what exactly would be the point of doing this? Not only that, how long would it take? Do we know the OP's coin isn't silver, or a way to tell?
I remember that in junior high, there were some guys who spooned some nickels, then drilled and filed them to make rings. That fad was pretty common sixty years ago.
I agree it looks like a dryer coin. The thing to me is that with all the dryer coins I've found the rim has also expanded and looks mushy. This coin appears to have a somewhat defined rim. Do I think it's still a dryer coin? Yes. Just an odd one.
During WW II, it was a common practice for bored sailors to "spoon" coins into rings. My father was one of those. He even painstakingly filed a Mercury dime so that only the head remained and then encased it in a clear plastic heart to make my mom a necklace.
Also, a "dryer" coin doesn't always mean the coin was stuck between the barrel and insides, It could simple be in the tub and getting worn down. Even caught in a washing machine tub.