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We propose a realistic model of the optical properties of silver, in whichinter-band transition with a threshold energy of ~ 4 eV is describedphenomenologically by an ensemble of oscillators with same damping constant anda certain distribution of resonant frequencies in the interband transitionthreshold to infinity. The contribution of the conduction electrons in thedielectric function is determined by the Drude formula. The proposed modelactually contains the features of both the Drude-Lorentz model (Raki\'c et al.1998) and Tauc-Lorentz model (Jian-Hong Qiu et al. 2005). However, unlike theseworks proposed model contains only six fitting parameters, with the square rootof the mean square deviation of the absorption coefficient and refractive indexof silver from the experimental values in the range of 0.6 nm - 6.0 nm being ofthe order of 0.05.

Modelling of the optical properties of silver with use of six fitting parameters