QUOTE(bill @ Jan 11 2008, 12:27 AM)

My find came in change a few years ago during coin week. The local coin club salted some old coins in circulation to spark interest. I received a 43 steel cent in place of a dime in change (it was reprocessed, but still a nice looking coin). I spotted it as the teller was counting out the change. I didn't say anything and the teller genuinely thought she gave me a dime. I was amazed at how little attention they paid to the change.
Even if they were paying attention they'd say "Okay, it's a penny made out of different metal, here's a nickel and 4 other normal pennies." then roll their eyes at you for being so weird.