silver certificate

from WordNet (r) 3.0 (2006)

silver certificate
    n 1: formerly a bank note issued by the United States Treasury
         and redeemable in silver

from The Collaborative International Dictionary of English v.0.48

Silver certificate \Sil"ver cer*tif"i*cate\
   A certificate issued by a government that there has been
   deposited with it silver to a specified amount, payable to
   the bearer on demand. In the United States and its
   possessions, it is issued against the deposit of silver coin,
   and is not legal tender, but is receivable for customs,
   taxes, and all public dues. In the United States the
   redeemability in silver of silver certificates was
   discontinued in the 1970's; they are still (1997) accepted as
   money at the face dollar value, but cannot be redeemed in
   silver.
   [Webster 1913 Suppl. +PJC]