Hello and 
They just look very worn to me and suffering from environmental damage. Maybe someone found them with a metal detector, cleaned them up to remove some of the surface gunk and then put them back into circulation. Still, it's fun to find Buffalo nickels in the wild. (I actually spent one in Puerto Rico in December and another in Orlando in January but mine weren't quite as far gone as these!)
They just look very worn to me and suffering from environmental damage. Maybe someone found them with a metal detector, cleaned them up to remove some of the surface gunk and then put them back into circulation. Still, it's fun to find Buffalo nickels in the wild. (I actually spent one in Puerto Rico in December and another in Orlando in January but mine weren't quite as far gone as these!)

























