Is it the Samuel or Edward Merrin Gallery?

The Edward H. Merrin Gallery at 643 Park Avenue listing on the Yellow Pages.

The Merrin Gallery of today sprouted from the previous, Edward H. Merrin Gallery, located on Park Avenue in New York. As mentioned on the gallery's listing on the Yellow Pages:

The Merrin Gallery has moved to 724 Fifth Avenue, New York.

Among detailing what antiquities this former version of the gallery offered, the listing also includes a brief history:

The Edward H. Merrin Gallery, or simply known as the Merrin Gallery, was founded by Edward Merrin in the 1960s. The gallery saw success in the decades to follow — where Edward would become a trusted dealer for major museums, collectors and investors. He also aided various institutions in authenticating works of art. Under his leadership, and later, that of his son's, Samuel Merrin, the gallery flourished and became known simply as the Merrin Gallery.

The phone number listed on the Yellow Pages is the same number as today's gallery (likely to avoid confusion): (212) 757-2884. That's all the research for this week, folks!