【美國】科羅拉多：門環

Distance: 12,139 km (7,543 miles)

Travel time: 10 days

Issued: Jan. 23, 2013

Spicebush Swallowtail (Butterfly)

Denomination: 0.66 USD

Issued: 1966

Humane Treatment of Animals

Denomination: 0.05 USD

Issued: July 30, 2005

American Treasure series - New Mexico Rio Grande Blankets

Denomination: 0.37 USD

New Mexico Rio Grande Blankets series