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CINCINNATI MINING AND TRADING COMPANY
(or California Mining & Trading Co.
of Cincinnati)

Gold issues:
1849 Five Dollars
   Plain Edge - Unique
1849 Ten Dollars
   Plain Edge - Unique
   Reeded Edge - Six known

Off-Metal issues:
1849 Five Dollars in Copper, Plain Edge
1849 Twenty Dollars in Copper, Plain Edge

Kagin mentions a trial striking of an 1849 Cincinnati Mining and Trading Company Five Dollars over a Pacific Company trial striking, but cautions that the piece had been seen but had not been authenticated as of 1981.
  

Sources and/or recommended reading:
"Walter Breen's Complete Encyclopedia Of U.S. And Colonial Coins" by Walter Breen

"Private Gold Coins and Patterns of the United States" by Donald H. Kagin