Julep Strainer

The Julep strainer evolved from tea strainers, and hit its height of popularity during the Gilded Age of the late 1800s. They became popular wedding gifts and sometimes resembled scallop shells like the one below:

Julep strainer, via The Sazerac House

Nowadays the Hawthorne strainer is usually what you’re going to see, regardless of the drink being strained.