The Collaborative International Dictionary of English v.0.48:

Ninepence \Nine"pence\, n.; pl. Ninepences.
   1. An old English silver coin, worth nine pence.
      [1913 Webster]

   2. A New England name for the Spanish real, a coin formerly
      current in the United States, as valued at twelve and a
      half cents.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ninepence
    n 1: a coin worth nine pennies