Apologies for resurrecting an old thread but I just saw this curved Shiavona with nearly identical star/moon markings as my blade.
http://sword-site.com/thread/731/curved-schiavona
The quality or detail of the marks on that blade don't seem any fancier or nicer than he ones on mine. I wonder if the marks on mine were done in Europe when it was forged rather than in Africa as most people assume.