It's not unusual for a worker to lose track of a pension benefit. Perhaps you left an employer long ago and forgot that you left behind a pension. Or maybe you worked for a company that changed owners or went belly up many years ago, and you figured the pension went with it.
As an inveterate stooper-for-pennies, however, I've noticed a recent significant change on the streets of Manhattan. Yes, plenty of pennies are dropped. But just as often nowadays it's dimes that turn up on the pavement.