That is the Buckler made as an "authorised copy" by Dennis Lyndesay and his brother in law Ray Tyler. They bought the bits for one car, and with agreement from Buckler NZ who couldn't supply enough to meet demand made a similar chassis, but mainly straight tubes. Graham Thomas, is who many of folks on here know as Dewar. He made a number of changes to the car largely in suspension. After selling he moved to Europe and his place in the F1 scene.
He told me some time ago that there was extensive damage, and that it was dismantled for parts. What became of the chassis and body is unknown. It does not appear to have surfaced again after that.