1. The Largest Banknote

Measuring in at roughly the size of a sheet of legal paper, the world’s largest single banknote is the 100,000-peso note created by the government of the Philippines in 1998. Designed to celebrate a century of independence from Spanish rule, the note was offered only to collectors, who could purchase one of the limited-edition notes for 180,000 pesos, or about $3,700.

2. One in a Million

The largest banknote ever issued by the Bank of England was the £1,000,000 note, issued in 1948 as a temporary measure during the postwar reconstruction in the Marshall Plan. Designed for use by the U.S. government only, the notes were canceled after just a few months, allowing very few to escape into private hands. But just because the notes are out of service doesn’t mean they’re valueless — in 2008, one of two known surviving notes fetched almost $120,000 at…