1st century or older which is, even to me, logical if it's a Campana relief.
There are more examples, but the style from the one shanxi posted, was later often copied by the Romans, in the 1st century and even before that.
Forget Pompeii for a moment, it's what one of the preowners thought or got told.
No @Prieure de Sion but I like to hear that! π