When the U.S.  Mint reissued two-dollar bills, I thought they might someday become collectors' items. 

I went to the bank and picked up a hundred, serially numbered and still in their original band. 

On my next trip to my parents' house, I gave the $200 to my mother and said, "Take good care of these.
They might be worth something someday."

Several months later I asked Mom if she was keeping the two- dollar bills safe. 

"Oh, yes!" she replied.  "I deposited them in the bank the day after you left."