Cal. 30.30 I Have A Sears &roebuck Model Number 273810, Cal. 30-30?

I have a Sears &roebuck model number 273810, Cal. 30-30? - cal. 30.30

This weapon is a leverage of the forearm in the bands of metal around a circle. He has a pistol grip people. It is the old weapon of chair time ....... I get an accurate assessment, please?