They look to be authentic coins that have lots of post mint damage. With the flattened rims and apparent heat damage it is possible they are "dryer coins". They could have also been deliberate subjected to some sort of corrosive and spooned.
not fake, but home made, it's called "spooning coins", not to be confused with other types of spooning on an internet search. Not sure if spooned really or trapped in a commercial dryer on spin fr along time though. they look like heat damaged
Those are actually known as Dryer Coins. Those aren't spooned. Caught between the drum and the wall of an industrial dryer. Post Mint Damage
Some information http://www.error-ref.com/dryer-coins/ The ones shown are not as extreme as the OP's coins.
At first glance, it looked like dime rolls with altered cents on the ends. When I was a kid, we'd sometimes scrape a cent on the sidewalk until it was the same size as a dime so we could use them in a vending machine. Those cold cokes sure were good on those hot South Texas Summer days. I'm better now days and don't do that any longer. Besides, what can you get for a dime?
