  Microcanonical critical droplet theory and molecular dynamics simulations are
used to examine static coexistence between solid and liquid phases in nanoscale
lead clusters. It is shown that the theory predicts the existence of a
metastable coexisting state above a critical cluster radius $R_1$, with this
state becoming stable for clusters of radius $R > R_2$. Molecular dynamics
simulations of lead clusters confirm the existence of stable coexisting states
in 1427-atom and 2057-atom clusters but find no stable coexisting state in a
931-atom cluster.
