The Smoking Gun has the goods on a would-be con artist and forger who was caught prior to trying to pass off $1,000,000,000 bills -- yes billion dollar bills. And they were supposedly from 1934 no less. The real hint that something is up, of course comes in the
third page of the article. Note the purported date of issue of the supporting bank certificate and maybe you can see what one possible use of the bills could be.