The Collaborative International Dictionary of English v.0.48:

Specie \Spe"ci*e\,
   abl. of L. species sort, kind. Used in the phrase in specie,
   that is, in sort, in kind, in (its own) form.
   [1913 Webster]

         "[The king] expects a return in specie from them" [i.
         e., kindness for kindness].              --Dryden.
   [1913 Webster]

   In specie (Law), in precise or definite form; specifically;
      according to the exact terms; of the very thing.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Specie \Spe"cie\, n. [Formed as a singular from species, in
   sense 5.]
   Coin; hard money.
   [1913 Webster]

WordNet (r) 3.0 (2006):

specie
    n 1: coins collectively [syn: coinage, mintage, specie,
         metal money]

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "specie":
   and pence, cash, circulating medium, coin, coinage, coined liberty,
   cold cash, crown, currency, dollars, double eagle, doubloon, ducat,
   eagle, emergency money, filthy lucre, five-dollar gold piece,
   fractional currency, gold, gold piece, guinea, half crown,
   half eagle, hard cash, hard currency, hard money, legal tender,
   lucre, mammon, managed currency, medium of exchange, mintage,
   moidore, money, napoleon, necessity money, pelf, piece,
   piece of money, piece of silver, postage currency, postal currency,
   pound sovereign, pounds, roll of coins, rouleau, scrip, shillings,
   silver, soft currency, sovereign, sterling, ten-dollar gold piece,
   the almighty dollar, the wherewith, the wherewithal,
   twenty-dollar gold piece



Bouvier's Law Dictionary, Revised 6th Ed (1856):

SPECIE. Metallic money issued by public authority.
     2. This term is used in contradistinction to paper money, which in some
countries is emitted by the government, and is a mere engagement which
represents specie. Bank paper in the United States is also called paper
money. Specie is the only constitutional money in this country. See 4 Monr.
483.