Mac 1-61 gear drive,80cc sold from March 1960 to April 1961.Saw came with 24" bar & 1/2" pitch chain,will pull 36" bar all day long.
Mac 1-70 direct drive,sold from June 1959 to August 1960.Needs a few minor parts/some tinkering to be a runner again.87cc/5.3 cubic inch is same displacement as its 1-80 gear drive cousin sold during same time.