Years ago police officers were allowed to ride and just had to flash their badge or be in uniform. This wasn't a gimme but was a benefit given to police depts. in the cities and towns the MTA served. Well this guy used to come through Harvard Sq. every day and flashed what looked like a gold badge. One starter kept trying to get a close look at it because he didn't recognize it. So he finally grabbed the guy and the tin was a soup can top. He admitted in court to using it for over ten years.