1.   He will be able to identify the location of almost any important artwork at any given time.

2.   Hirschl sold important artworks to museums and to some of the most celebrated collectors in the United States.

3.   One of the most important repositories of important artwork is ... here?

4.   Sellers of important artworks generally insist they be sold in New York, believing that they have a better chance there of reaching a wider, richer audience.