The concept here is simple, splendid and timeless: when a cardinal pays a visit to his titular church in Rome the parish displays its few donated treasures of gold and silver on the credence table for all to admire.
This is how it's done, as seen in Rome. And this entire credence table was only just last year commissioned, put together and paid for by a lay parishioner (special thanks to Maurizio the Great!) and this is a fine example of (authentic) lay participation!
So many suitable ways to communicate doctrine to the men of our times and so unique to see this in Catholic Rome.