I'm not sure what to make of this thing.  It looks extremely old, thick handguard, and heavy.  Blade is about 8 inches long. Overall length 12.1/4 inches.
It could be a dagger.  But I seem to recall seeing pictures in a book of an antique pike or spear head which looked sort of like this.  Any ideas of the origin and purpose of this item?  Thanks for looking.   
