[Verginius Rufus]

Yes, it is unlikely the object was still around centuries after the sack of Jerusalem, when the Roman government began to favor the Catholic Church. Besides that, Rome was sacked by the Goths in 410 and by the Vandals in 455, so anything valuable may have been carted off on one of those occasions.

[Askel5]

=== Besides that, Rome was sacked by the Goths in 410 and by the Vandals in 455,

Evidently, the folks on the "antiquities" .edu chatboard tend toward blaming Vandals as well.

[Senator Pardek]

Besides that, Rome was sacked by the Goths in 410 and by the Vandals in 455...

But it was nullified by an "offsides" call.