greenbacker
noun
green·back·er ˈgrēn-ˌba-kər 
1
capitalized : a member of a post-Civil War American political party opposing reduction in the amount of paper money in circulation
2
: one who advocates a paper currency backed only by the U.S. government
greenbackism
ˈgrēn-ˌba-ˌki-zəm
noun 
Word History
First Known Use
1868, in the meaning defined at sense 1