Yeah, increase its value by about $800; put the bill in there, too.....
No casting or soldering marks means that it was cast. Often craftsmen remove all sprues and completely resurface castings. Several small casting flaws are visible in the surface of the hilt, such as are typical of preindustrial brass castings; not knowing whether there were solder lines that didn't tell us much though, as to was it cast in one piece or several (which could've been made in reuseable molds). Now we know. Pretty cool. Thoughts on is the transverse internal tube that goes thru the pommel part of the casting, or just the copper inner sleeve we see? Just the copper is my vote, though I doubt you can see well enough into that hole in the butt?
How 'bout an endoscopy, too?
Actually I know the xray would show this; just cracking wise