Another sword; another challenge

[Jim McDougall]

Originally Posted by Victrix

I think I’ve seen that lattice and plume pattern on Hungarian blades. The blade is for a sabre yet it’s attached to a Spanish bilbo hilt. Maybe the blade even has a false edge at the backside end of the tip?

This is SPOT ON!
That style of blade decoration is indeed well known in Eastern Europe, and most notably on Hungarian blades, where I believe it may have to do with these kinds of occult esoterica known as 'the Transylvanian knot'. While exactly which device or motif this applies to, the entwined lattice type decoration may well pertain to a 'knot' in effect, perhaps referring to the esoteric decoration collectively.

Fernando, totally agree with the skeptical reference, and as always with spuriously applied devices and marks, pretty much anything is possible.