if found, yes.  anyd money with an imperfection that a bank sees gets marked for removal from circulation .

and no, money can be used for profit...  you just can alter the currency in order to gain profit.

So money cant be used for profit gain, got it

What about those 'Where's George' dollars, would those get destroyed as well?
(if you dont know what i'm talking about, they have 'Where's George?' and a website address stamped on them, so people can track them)

oh my god...  "hi, our business is coinage and collectable currency, yet we dont know the law about them!"

fyi...  you can get a portrait of your gf , bf, dog, cat or whatever put on a coin or bill perfectly legal.  but if you put anything on it that can result in any form of profit gain (like THIS or burger king logo) that is illegal.  the coin/bill belongs to you, but there is guidelines to what you can do with it.  hell, you can legally burn money (but rather than do that, feel free to send it my way)

yes, they are spendable, but once they reach a federal reserve bank, they will be destroyed.

Strange. :)

That's intresting.  Are the altered coins spendable?