Juchid, Khidr Khan, Lower Volga, Gulistan, AE pul

[capnbirdseye]

 Juchid, ca. 650-886 » Lower Volga » Gulistan » Khizr 761-762 » AE pul

I have a few of these ticketed as Ju'jid, some are different so presumably not all Khizr Khan,  this one is date AH 762

[THCoins]

The calligraphy is still nicely recognisable on this one for a copper coin. I would say it is not likely your loot are all Khizr Khan, for he does not seem to have ruled very long. I only have one silver specimen issued under his rule.

[capnbirdseye]

there several more like the above one but date not clear,  here is another one ticketed as khizr Khan but might be incorrect ?

[THCoins]

Well in this last one i seem to be better able to make out "Khidr Khan" in the cartouche than in your first one.
And than this last one looks like sarai al-jadida mint.