"Confererate" Swords, "Bowies" and even numbered bayonets are a minefield.
Look at every one you can get to see, AFTER you've bought a few books on the subject, and always treat the "story" as fiction until it's proven other wise; period photos, engraving, sales receipts, a KNOWN model from known makers, etc.
It took more than 50 years to gather my accumulation of CS blades, but I was fortunate to have been around in the 60's when they were more plentiful and the "old guys" {collectors, authors, dealers} were still around.
BUY the SWORD, NOT the STORY ! and you'll end up with something like this
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Maybe even a Generals' or two...
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