It's a stand for a bishop's or higher prelate's solideo where it can be put on during the canon.ORBuzzer for liturgical quiz show.
A zucchetto stand?
It's a stand for a miter or tiara
I don't know the thing's name, but it's the stand that held the tiara during the pope's pontifical Mass.
circa 1790 toilet plunger?.....
Holds zucchetto on credence table?
The tiara stands were shorter, with a wider base.
Does anyone have a photo of such a zucchetto or tiara stand being used in a Mass from long ago???
Looks like an ordinary altar candlestick retrofitted to become a zucchetto holder by the insertion of the wooden form into the drip pan.