I live in San Francisco, Ca. on Nob Hill. Last Friday or Saturday, I was looking out my back door to look up to see the usual Lufthansa flight to Frankfurt. I can always tell if it is a A340 or a 747-400. Well not only did I see the Lufthansa flight, but a 747SP as well. Unfortunately, I don't have the great vistas my upstairs neighbors have, so the markings of the plane where at only a glimpse. This 747SP was also at a very low altitude and flew over the Bay at a flight path rarely allowed to airliners that low(over the Bay and over the Golden Gate Bridge). I thought the markings looked like those of the South African charter company whose name I have forgotten. There is the head of a lion on the tail. The last time I saw an airliner fly that flight path was the inaugural flight of Virgin into SFO. Does anyone have any info about this airplane?