Kyrene, Kyrenaika, AR tetradrachm, ca. 495-475 BC, 16.62g. 

Silphium plant with a lion's head left on the right, silphium 
fruit above and below.
Eagle’s head left, tortoise on the left, all within a dotted square 
border in an incuse square.

Asyut 819-820; BMC 13a (page xxiii).

With permission of Baldwins Auctions, NY Sale 27, the Prospero Collection, 631.