Reeded edge. Very rare dual-date coin struck by dies for two different denominations. As written in the 100 Greatest US Error Coins book by Nicholas P Brown, David J. Camire and Fred Weinberg, "This error type occurs when a struck coin somehow becomes lodged into a corner or piece of machinery or is stuck in a crevice of a tote bin towards the end of the calendar year. It will eventually become dislodged and can be struck again. Whereas there are approximately 500 double-denomination cent on dime coins known, there are fewer than 20 different-dated double-denomination cents struck on Roosevelt dimes known for the entire 100-year history of the Lincoln cent."
This is a great example of an "11-cents" error coin, well struck with bold details of the host and overstrike present to the unassisted eye. The cent strike is rotated 90 degrees from the host coin's strike. Bright and lustrous silver-gray surfaces. With such a low population of double denomination coins, even fewer known with dual dates and even less with two different dates, this is a tremendous opportunity to own a very rare error coin.