Hmmm, I wonder if that was after all RS715 vs 718. I will admit I did not have a good pair of binoculars in those days, possibly a little pink plastic telescope from the toyshop. It was coded '49' anyway, so that may help identify it positively. Not bad, to get corrections to logs after 44 years!
The one at the military museum in Jo'burg is LR480, a
PR IX, of 60 Sqn SAAF, marked 'Lovely Lady'. At least, it was in April '92.