I give you the answer AllenBrown : this website is
www.oldracingcars.com, which indicates that TS9/003 was raced (and crashed) by John Love in 1971/1972, then by Nols Niemann in 1973, and that Joe Domingo drove TS9B/004 in 1975.
But on the same site, one can read elsewhere (F5000 chapter) that Niermann's 1973 car was TS8/04, owned by Alex Blignaut.
Further more, a close look at a photo in the Michael Oliver's Lotus 72 book (page 208), showing the starting grid of the Republic Day Trophy race et Kyalami, May 1975, allows to see a Surtees (#22) with a TS9 nose and not a distinctive TS9B one.
Other sources I don't remember where on the web indicate that the wreck of Love's car was bought by the Domingo brothers.
Where is the truth ? Racing records of individual chassis are often made of surprise and mystery. This is another example.
Thank you for your contribution. I would be pleased to have your point of view.