Hello.
Little over a year ago I visited Japan, and purchased an antique tanto, some 150 years old (paid ~1700e = $2500). I haven't touched it other than to clean and re-oil the blade (with the proper caretaking tools that I purchased along with the tanto)
Tonight as I re-oiled the blade, little piece of the black lacquer(?) finish chipped off of the scabbard. I looked closer and the finish is about to chip off both from the handle and the scabbard near the mouth. It looks like it is drying out, so much so that it's difficult to take the tanto out of the scabbard without causing another chip to fall off. I am not completely sure if it was just about to chip off all along though as I have been handling the piece quite carefully; it could be I've just managed to keep it together until now.
I do not know much about Japanese antique swords, and actually I do not know if the scabbard and handle are also supposed to be 150 years old (would that even be possible?), and if they have much value or not. But either way it is a shame because the scabbard was in a very good shape, so I would like to know if there's anything I can do about that.
If you guys need to see pictures, I can arrange them at some point.
Thanks in advance!
-Anssi H