Just the other day my friend's *mother* tells me she's got a knife of mine.... Not only does she wish to return it, now after some 5 or six *years* but also she's taken the initiative and sent in for professional sharpening.
Mystery mystery... What knife did I ever give this friend, that would later land with his mother?!
In brief, my beloved used to own a single beveled funayuki (?) Which neither of us found useful. Also, iirc, it had some rust spots. This was years ago!
Without further ado