In the late 1960s I read about a lead cross carved with Latin script and found in the SW somewhere. Barry Fell stated that the inscription appeared to be botched-together fragments of the Latin mottos of various noble families of Europe, thus modern; it had been carved, then inserted into a custom-dug spot in the caliche, which is an accumulated layer that had been cited as evidence of the cross' antiquity. That said, I don't have any confidence in debunkers, because they work out of a priori assumptions 100 percent of the time.
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The evidence is the evidence. What’s authentic must meet certain criteria and what’s fake is sometimes easy to ascertain because modern investigations can expose a lot. That makes most debunking a relatively easy job. If they think a priori that something is fake, it’s probably because it has red flags obvious to the trained eye.