What happens when they're gone?

Someday the penny will be discontinued. How do you think this will happen? Does the mint or some agency give a time period to trade them in? Do they make them no longer legal to own? They lost money making them, will they want them back to recoup some of the loss? What happens to there collectable value when you can't get your hands on them? What do they do with billions of coins that no longer have a purpose? Should you start collecting the "higher" grades? They are technically owned by the govt.,can they make them no longer collectable to ensure they can reclaim them? Any thoughts? Does anyone want to put in their 2 cents?

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