Watch List notes:

Qarakhanid, Nizam al-dawla Tungha Tegin (fl.399-404h), Dirhams (4), al-Shash 400h: obv. margin in square, obv. margin in circle, obv. bow to right of central legend, obv. bow below central legend (Kochnev 259, 260; A 3333). All with some minor weakness otherwise very fine and scarce, an interesting group. (4)
It is very unusual to find four different types struck at one mint in a single year.

Estimate: £200-250