Sometimes I'm pretty sure it's law enforcement with nothing better to do trying to lure me into doing or saying something naughty. They're fun to play with. At least you *hope* it's law enforcement, and that regular people wouldn't ask such obviously convoluted questions and spin such unlikely tales, and try to wheedle and cajole me into buying stuff or helping them sell stuff that would be illegal. I do get the occasional request that's probably legitimate, usually along the lines of "Uncle Earl died. We found this in his attic. What is it and can we sell it?"
Thus far I have always been able to identify the item in quetiont. In one case, we found it was an amnesty-registered PPSh43, and it was therefore legal. Oft times, however, they simply don't know. I tell 'em their best choices are to take 'em to gun museums or call law enforcement and arrange a pick up or delivery until the status can be determined.
But dont sit on it too long. The Feds are really pretty easy-going if you call up, tell 'em what you got, and make arrangements to turn it in. But if you sit on it for any significant length of time - they get a little cranky.
Anyway, all that sets up this - this week I have a guy who asked some questions about German markings on the blocks of explosive they used for their mines... and while taking some pics to answer the questions, I just realized, "Gollee, my countertops in the basement are more interesting than those in most of my buddies basements." And I just wanted to rub yer noses in it.

So, consider 'em rubbed in it.
And I happen to like granite countertops a little better...they tend to survive my ill-treatment a little longer...
Besides, it's what's *on* 'em that makes 'em better than yours.
And yeah, I can see how the heavy metal objects could take their toll on the granite.
And yes, if we're talking about what's ON them, you win as always...