Silver nano-clusters were introduced into the core part of the poly(vinyl alcohol) [PVA] core-polystyrene [PS] shell type microspheres. The introduction of silver nano-clusters was observed by energy dispersive Xray spectrometry (EDX) and wide angle X-ray scattering (WAXS). The maximum content of the silver (17 wt%) was obtained at 9 mol% of PS shell content. The silver content in the film was governed by the shell thickness (PS content), the crosslinking density of the core, the composition of used solvent and the presence of hydroxide ions in the film.