2010-S $1 James Buchanan with Signature, DCAM PR70DCAM 认证号19846877, PCGS号417881

James Buchanan, Jr. was the 15th President of the United States (1857–1861). He is the only president from Pennsylvania, the only president who remained a life-long bachelor and the last to be born in the 18th century. Buchanan (often called Buck-anan by his contemporaries) was a popular and experienced state politician and a successful attorney before his presidency. He represented Pennsylvania in the U.S. House of Representatives and later the Senate, and served as Minister to Russia under President Andrew Jackson. He also was Secretary of State under President James K. Polk. After turning down an offer for an appointment to the Supreme Court, President Franklin Pierce appointed him Minister to the United Kingdom, in which capacity he helped draft the controversial Ostend Manifesto.