If (as I think) “Tazi” and “Saluki” are linguistic rather than biological distinctions, reflected where Arabic turns to the Turkic and Persian tongues, the title is redundant.
The pics are not, and even clinal change admits some differences. Iranian tazi, stolen weeks ago, returned to its horse archer partner this week, a friend of a friend (“it” only because I do not know “its” gender).
It is BLACK, not tanpoint, as is this one on the other end of the Salukiverse, in Xinjaing, taken by Sir Terence Clark. You don’t see real black in the Arab countries, only east of the tazi line.
Even in the early 19th century some Afghan tazis had BIG coats.
Take a look at Binde von der Hasenklage, born in Germany in 1949: http://www.thesalukiarchives.com/details.php?id=64103
She is described as "gray with red ears". This color almost certainly the gene [KB] dominant black. There is a potential path for the KB black gene through her pedigree, going back to a dog named Hassan el Bahrein, born in the UK to Saudi and Syrian parents. KB black would have come from his Saudi mother, since his father was a definite black and tan.
The black gene goes forward to this day to European and American dogs.
Hassan el Bahrein could be a regular tan point… but faint tan points are seen on some dogs carrying KB. A number of dogs with a faint tan point pattern have been tested to carry KB black, EG grizzle, and [at] tan point.
In other words, there is a case to be made that [KB] black has been present in small numbers in Western salukis from the beginning
Black can hide in cream/red dogs, and can be modified in dogs carrying other genes, so it can appear to skip generations and come out of nowhere.
SH