The simplest fancy numbers are the early ones: The redesigned $100 note with serial number 00000001 is likely to fetch $10,000 to $15,000, according to Dustin Johnston, director of currency for Heritage Auctions in Dallas. A $20 bill that was first off the press in a 2009 run sold in April for $5,581.

Currency Serial Number Checker

Foreign Currency Serial Number Lookup

• Radars- Notes that have a serial number that reads the same forwards as well as backwards: KA or Z8778K or J11222211A. Low Serial Numbers- Numbers that have a very low serial number, usually 3-digit or less: BA00000123A or J00000001* or D2A. Binary Numbers- Notes that have all ones and zeros: BA11001010A or Z11110000B or D1101A A00000001*.
• Verify PMG Certification Enter a PMG certification number and select the PMG grade on the holder to view the note's description in the PMG database.