Yes,
this one is a YR60 Master Mower.
It has the optional 18hp twin cylinder TJD Wisconsin.
I think this one dates from the late 1970s or early 1980s.

I know these machines pretty well and they sold in volume
to councils and golf clubs. They had two in-line multiplate clutches
in a transaxle that gave instant forward and reverse.

These were well-liked and fun to drive!

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