The medal's obverse bears an allegorical female figure holding a lamp and an olive branch in outstretched arms, standing in front of a globe, clouds below.

The reverse bears two cornucopias arranged like wreath, tied with ribbon at bottom. In center, PAX; signed around lower right, TIFFANY & CO.

The design on the obverse is based on a medal by J.G. Hancock celebrating the Treaty of Ghent, which ended the War of 1812. 

The circular medal measures 29.1mm in diameter and was issued by an organizing group called the American Peace Centenary Committee. It was struck in sterling silver by Tiffany & Co. of New York.  No mintage is reported. 

There is also a better known larger diameter medal with a different reverse.

Many thanks to the Numismatic Department of the Yale University Art Gallery for their generosity and support in making this medal available to me for research.