This limited circulation US coin is a second year Sacagawea Dollar. This version of the 1 Dollar coin circulated from 2000-2008. It represented the third post WW-II example of a US 1 Dollar coin. Due to production delays it was briefly preceded by the reintroduced Susan B. Anthony Dollar (1979-1981,1999). Which was re-struck in 1999, after being retired 18 years earlier.
The coin is a smooth-edged design made of brass-clad copper core and weighs 8.1 g. Its dimensions are 26.5 mm (1.04 in) wide and 2 mm (0.08) in thick. It shares the same weight and size of the earlier Susan B. Anthony Dollar. Although due to it's brass coating didn't undergo some of the same issues. As Susan B. Anthony Dollars were easily mistaken for US Quarters.
Observe
The observe features a portrait of Sacagawea (1788-1812), the Shoshone guide of the Lewis and Clark Expedition. On Sacagawea back is her baby son Jean Baptiste Charbonneau (1805-1866). Who's father was Sacagawea's husband the French-Canadian Explorer Toussaint Charbonneau (1767-1843). Toussaint Charbonneau served as a Hidatsa translator on the expedition.
Above the portrait is the text "Liberty", while toward the upper-left is the motto "In God We Trust". On 30 July 1956, the 84th US Congress passed a joint resolution, adopting it for official use. Since 1957 it has been a standard feature on all US currency.
Toward the lower-right is the coin's "2001" mint date. Below it a letter "D" mint mark can be seen. This mint mark represents the US Mint (Denver).
Reverse
The reverse features a soaring eagle, to it's upper-left is the Latin motto "E pluribus unum". This phrase is often translated as "Out of many, one". A metaphor for the federal system of the US government. The eagle and motto are surrounded by a ring of 17 stars. Representing the 17 states in the Union, during the the Lewis and Clark Expedition.
Beyond this ring of stars is upper and lower text. The top reads "UNITED STATES OF AMERICA", representing the coin's issuer. While below is "ONE DOLLAR" representing the coin's value. Notably there is a mark after the letter "R". It reads "TDR", for Thomas D. Rogers. The designer of the reverse artwork.
Additional Notes
The Susan B. Anthony Dollar was produced by all 3 US Mints: Philadelphia (-), Denver (D), and San Francisco (S).
Unlike the earlier Susan B. Anthony Dollar, the Sacagawea Dollar doesn't feature a "P" mint mark, to represent the Philadelphia mint.
Sacagawea was modeled by a Shoshone woman named Randy'L He-dow Teton (1976-20xx)
Due to limited demand the Sacagawea Dollar seen limited circulation, spanning the original 2000-2001 and a later 2009-2011 production run.
Despite limited demand from the general public, Sacagawea Dollars are a popular amongst collectors of US coins.
Since 2009, collectors Sacagawea Dollars have been released yearly as the "Native American Dollars" Series.
Coins of Native American Dollars feature a redesigned reverse, depicting notable Native Americans throughout US history.
Collector variants of the Sacagawea Dollars feature their mint dates and marks along the rim.