Looks like I can 'claim' to be the "First to Find" of this Buena Vista trig
What I thought would be a likely spot to stop and ask for permission to access the trig turned out to be the neighbour (only).
A name of a local was given. Caution with electric fences required. And the grass is rather long - been a while since cattle have been agisted.
A beautiful concrete pedestal, plastic post, black semi-circular vanes (with typical holes punched out), and an appropriate nameplate - BARGAIN
Took a few photos, then headed back to give my thanks.

Rated: for Overall Experience.