I need, in this quest, to establish just when the Rorstan-Porsche first turned out for a race meeting...

Having established that it ran in the '71 Tasman races (kind of an exaggeration, DNA and DNS being seen against the entry on the Sergent site), I now need to know if it was there at the pre-Tasman Gold Star events in December, 1970.

Can anyone establish this for me, please?