G'day Trevor
It's a post WWII Atco, imported from about 1947 until about
1960, when Atco changed to 4-stroke power units.

They are not rare, but this one is less common in that it is
of a wider cut than the popular 14" machines. I guess this is
the 17" (or 20"?).

Yes, the catcher is important, so I hope that is still with the mower.
One well-worth saving. This Atco design would influence two AUS
reel mowers - the Mobilco and the Austral-Villiers.

----------------------
Jack