I hate to break it to you but the coin you have does not match a real 1861 O half dollar. Its a fake. It also has the look of a fake. Likely magnetic too. Try using a magnet on it.
Here is a genuine 1861-O half dollar. The die breat for the Confederate coin is not spectacular. Here are a couple of pictures.
Compare the obverse and reverse wear. Both should be consistent and are not, the reverse has detail two full grades higher than the obverse. And that date? I hope the hit you took was not a high dollar one.
Two things: 1) It doesn't look right at all 2) Just because it's dated 1861 does not make it a CSA coin. CSA is for Confederate States of America. This, if real, would have been minted by the Union States. The CSA had their own coins.
Just a brief history lesson. The New Orleans Mint was run by three entities in 1861. According the Red Book, it struck 330,000 half dollars when the U.S. Government controlled it, 1,240,000 when the State of Louisiana had it and 962,633 after Louisiana joined the Confederate States of America. The educated guess is that the pieces with the die break shown above were among the last group. The Confederacy only made one coin that was of their design, the Confederate half dollar of which four are known. All the rest of the coins that the Confederacy made at the Dahlonega, New Orleans and perhaps Charlotte Mints were made with union dies. There were no really good die makers in the South who were available to the Rebel Government.
Excellent information johnmilton. Didn't study of coins recovered from the SS Republic result in a few additional varieties attributed to the Confederacy?
Here is the "Scott restrike" of the only coin that had "Confederate States of American" on it. The "Confederate Cent" may have been for real, but the Confederate Government never saw it. People are debating its status. Here is a Scott restrike of the Confederate Half Dollar.