5 Fen Pattern, 'Fat Man dollar' type, copper-nickel

The "Fat Man dollar" takes its name from the Yuan Shikai portrait used on the silver dollar of 1914, issued after Yuan consolidated power and formalized his presidency. This 5 fen pattern was part of a broader effort to rationalize China's fractional coinage alongside that dollar issue. Patterns in copper-nickel from this series were struck in limited numbers as proposed subsidiary pieces; most never advanced to circulation strikes, leaving survivors almost exclusively in institutional or long-held private collections.

The Kann 815 variant designation signals a die or compositional divergence from the primary pattern listing — the specifics of which remain incompletely documented in the literature.