Originally Posted by Norman McCormick
The muck in the hilt looks very much like hardened grease so this could be a possibility. The lenticular blade does not seem altogether unusual for swords of this type.
You may be right on the blade, all I can think of is those 'practice' blades, but those of course did not have a block ricasso.
You bring up great observations Norman...….actually I think YOU are one of the knowledgeable guys here.