The telling
The double eagle looks two ways at once, east and west. Since the Seljuks it has been cut into stone, coin and gate; its meaning is not power but that nothing goes unseen.

The Middle World · Tamga
One bird facing two ways. The khan sees both east and west.
The double eagle looks two ways at once, east and west. Since the Seljuks it has been cut into stone, coin and gate; its meaning is not power but that nothing goes unseen.