Average Icon in Material Style

This Average icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,400 icons, all in the same style and quality.
This icon is a small circle with another circle behind it. The first circle has the number "1" in the center of it. You cannot see the circle behind the first circle. It looks like it could be a 3D cylinder.

Idea of Average Icon by Ivan from Icons8

We've received the idea on October 31, 2011 and created the icons on November 24, 2011

Coins: one, two or three so I can mark expensive, average and cheap places.