Post History

What is the value of ancient artifacts brought to the modern day via time travel?

My novel involves time travel from the modern day to New Kingdom Egypt (14th century BCE).  My characters bring home with them large quantities (equivalent of a handful of grocery bags) of jewelry.  Gold, silver, other metals.  Gemstones of various kinds.  Both loose items and finished pieces.  Some miscellaneous other items, but mostly jewelry.

Jewelry with provenance to New Kingdom Egypt is worth a fortune.  Precious metals and gems from any era have intrinsic value (which would be a fraction of authenticated pieces but still a fair bit).  Where would these "souvenirs" land?

The details of this process are in the background and not shown in the novel.  Only the acquisition of the jewelry and a mention in the epilogue of how they sold some pieces, including to museums, and raised a lot of money.

Assume time travel is not a known thing to the buyers but also handwave away the idea that the buyers would think the sellers had done anything illegal.  The sales would be in small amounts over a period of a couple of decades.

Would the jewelry be thought to be replicas (worth more than ordinary modern jewelry, especially to a museum) or could they be thought to be the real thing (in impossibly excellent condition)?  Are pieces routinely carbon dated (which would not show the true age given the time travel aspect)?  Are there other tests for Ancient Egyptian artifacts?

In relative terms, what is the value of my time travelers' New Kingdom jewelry?