We can produce 3D scans of the gold, do mass spectroscopy.
Do you feel that vikings somehow embedded secrets in their coin?
Scrolls have writing on, if we can't yet read them we'd know that there was something else to discover (known unknowns) and clearly wouldn't dispose of them.
Of course the Vikings might have embedded secret extraterrestrial technologies in their coins, but I'd take the bet that they haven't.
The downthread comment about leaving things in the ground is right though -- it was, and is imo, the right thing to do.