Ancient elemental compisition

Numismaphile

I’m trying to decide if these go in the black box or have some merit. I haven’t attributed them yet but a first pass with my XRF shows mostly copper and lead with traces of tin, platinum, and other metals. Opinions welcome.

Sapyx

I'm thinking "platinum" is a phantom signal; there shouldn't be any platinum detectable in either an ancient bronze coin or a modern copy.

The other elements are typical for both an ancient or modern piece of Bronze. But just formt he appearance, these coins are giving off serious "modern replica" vibes. They've got mint lustre; there's no such thing as an ancient bronze coin that still has mint lustre.