1 Minnesota Jones: {leading the way through the Vatican} The library is this way.
1 Monty: I suppose you've been here before?
2 Minnesota Jones: I helped Leo XIII catalogue part of the Vatican antiquities collection.
2 Monty: Of course you did...
3 Minnesota Jones: I snuck out one or two pieces for myself.
4 Prof. Jones: Oooh. Anything good?
4 Minnesota Jones: Remember that silver platter we used to serve Sunday dinner on?

Pope Leo XIII was the 2⁸th Pope of the Catholic Church. He was Pope from 1878 to 1903, making him the third longest reigning Pope, after his immediate predecessor Pius IX (1846-1878) and the more recent Pope John Paul II (1978-2005).

I don't know if he catalogued the stuff in the Vatican Museums, but I know if I was puttering around the Vatican for 25 years, I'd want to have a good look through all the stuff that's been collected over the previous 1800-odd years.

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2017-04-16 Rerun commentary: Looking at this again for the rerun, at first I thought that was a typo for 28^th Pope. But no, Leo XIII was indeed the 2⁸th - or 256th - Pope.^[1]

[1] As officially counted, thus excluding the Antipopes.^[2] See also Sedevacantism, for more fun disagreement on the legitimacy of various Popes.

[2] I always wondered if a Pope met an Antipope, would they mutually disintegrate in a burst of gamma radiation? EDIT: Reader Steve M. writes: "They annihilate and emit two lutherons."