Silberling is the colloquial name for the n-coaches of the Deutsche Bundesbahn, a type of regional rail car of which more than 7,000 units were built from 1963 to 1978. Nearly all of the coaches have undergone extensive modernisation by now - these modernised units are widely known as Mintling, Grünling or Rotling after their exterior colours. The term Buntling is used to denote refurbished Silberling coaches in general.