This coin was minted by the Poarch Creek Indian Nation. It is in a plastic airtight container, and I would grade it somewhere between MS62 and MS70.
The obverse shows a Creek Indian riding an unsaddled horse toward the right. His right hand is on the horses reins while his left is holding up a piece of cloth (or a scalp?) in a fist. A legend is offset from the coin by irregular dendrites that form a circle around most of the image – the legend reads (from 8:00 to 4:00 clockwise): “*Sovereign Nation*”. The date is at 6:00.
The reverse shows a dancing Creek Indian, with his right arm and left leg raised. This gentleman is wearing heavier clothes than his fellow on the obverse, as well as a more focused and intent expression. The dancer is dancing to the left, approaching the seal of the Poarch Creek Nation. The legend is again offset by the strange barbed wire dendrites (often 3 dots followed by a spear point) and reads (CW from 9:00 to 3:00) “Creek Nation of Indians”. The denomination is at 6:00: “One Dollar”.
Identification code: KM-???
Mint Mark: n/a
Mintage: 20,000 in Brilliant Uncirculated, 10,000 in Proof. (I think this is a proof coin due to the encapsulation).
Country of origin: Creek Nation
Composition: 99.9% Silver
Size: 39 mm
Weight: 1 oz
Other details: Designed by sculptor Alex Shagin.
From the Poarch Creek press release: “The second 2006 Poarch Creek Silver Dollar features an energetic dancer at a Pow Wow and an Indian rider on a galloping horse. Originally held as a homecoming for tribal members in 1971, the Poarch Creek Indian Pow Wow has evolved into a cultural festival attracting approximately 10,000 visitors yearly. During the 1980s, the Pow Wow was extended to a two-day festival and now encompasses the Friday after Thanksgiving. The present site of the gathering is on land originally inhabited by this Native American tribe for thousands of years. Performances of ancestral dancers in authentic dress are at the core of the festival.”