Christie's is auctioning off the assets of disgraced media baron Conrad Black. All well and good. They are discreetly referring to the provenance of goods from Black's Ravelston Corp, Ltd. as "Private collection, Toronto." Which they are. Only it's Conrad Black's private collection.
It turns out that Black liked collecting portraits of himself. Especially the portraits Andy Warhol made of him.
Warhol painted, in all, four portraits of Black. After Black's fall from grace, he could only afford to buy back one of them from his creditors.