My SA 1958/59 model didn't have a sunroof.It may well have been imported from the Continent. Were sunroofs available on South African built cars? The few I've seen photos of didn't have them. They weren't easy for a small assembly operation to do. The 1958 SA model I was offered in the 1960's didn't have one and the finish wasn't outstanding.
In 1962 The Autocar did a second hand vehicle test of a 1960 model that had been imported duty free by a serviceman returning from a German posting. So there were many ways a 203 could find its way into the UK. When the M1 was opened it became desirable for a car to be able to cruise at 70 mph. In 1958 Distributors Peugeot were advertising the 203 had a 70 mph cruising speed. The Autocar opinion of the 1960 model was that it would hold 70 if all was right but just.