In Topkapi they claim (since there is no evidence - just some “things” ) to have these items related to various personalities from Islamic History
I just got them in an email and can’t say yes or no - as I have no further information.
Personally, I think if we can find the Egyptian mummies and other stuff from their tombs that are thousands of years old, then these items in the museum could also be genuine - only if we can find a reliable source or link to their history and how they ended up in this museum.
if you have come across them before and provide more information about them being authentic or not, I would really appreciate it.