For sale is an Ivory Skylark Single Pole Dimmer Light Switch by Lutron. The model # is S-10P-IV.

Save energy and extend bulb life with the Lutron Skylark 1,000-Watt Single-Pole Dimmer. This dimmer features a slide switch that adjusts light brightness and a rocker switch that turns the light on to a preset brightness level. Use this dimmer to replace an existing switch or to cover a wall plate opening.
 
You will receive the following (if it's not listed below, it's not included!):
Wall plate is not included.

Features

About Lutron Electronics
Lutron Electronics, headquartered in Coopersburg, Pennsylvania, designs and manufactures lighting controls and automated window treatments for residential and commercial applications. Lutron products save energy and make light bulbs last longer, making them an addition to the home and office. Lutron estimates that the installed base of its products saves the nation nearly 10 billion kWh of electricity, or approximately $1 billion in utility costs per year.