A very similar blade appears on an Italian Storta in Ivan Kovac’s book ”
Ubojite Ostrice” (Gornja Stubica, 2003). This is the sword #49 in the picture below from the same book. This picture was previously uploaded in post #2 in a previous thread:
http://www.vikingsword.com/vb/showthread.php?t=28557.
The description states it’s a late 16thC Italian Storta, with an overall length of 76cm and a jelman shortened to 5-6cm. Mark of serrated arches whose tops are surrounded by three points. [Translated from Croatian using Google translate.]
Aspalathos, has your blade been chemically cleaned from rust? Typically marks and inscriptions appear as black on an antique blade. Maybe it’s just the light in the photo?