*It seems to be a marbled box. actually pretty nice quality, especially with the details-- but when you feel it, your senses likely honed from the artifacts you've gotten over the years from your parents tells you this box must be some centuries old...! There's even an envelope next to it, and if you open it, it contains a letter of information about where the box is from (it was apparently found in central Europe and, as you guessed, is quite old), and when it was found (about the last half-century).

Hitoshi looks a little sheepish about it.*

I... know you like ancient artifact stuff, so I figured, maybe... I asked my grandmother back home if she had any ideas, and she sent me that, so... I hope you like it, at least.