[The emotion seems genuine enough, though Armin doesn't know this man whatsoever. Still, if he has any reason to lie, Armin doesn't know that either. It's an awfully personal anecdote, and he truly seems to want that mirror out of his sight.]

You could sell it. [A helpful contribution.] I hear that buying and selling is supposedly our path home.

That being said, I do understand that something like that might be difficult to part with.