hm,,, them that are some remarkably un hebrew lookin letter forms on that there grail....I tell ya!
While I think their claim is not credible (and their argument has an obvious logical flaw), their claim is that the plain polished stone cup underneath the gold and jewel setting is the original, and that the setting is a much later decoration.
Also lotta coin, but no Koine, either.
I could believe Judas would have used such...paid for out of some of the missing funds from the money-bag he was in charge of...but never would I believe Jesus would.