There appears to be a stamp on the back. Please see pictures for details. The item "$20 Bill Fancy Serial Number 7/8 Binary numbers 88688888" is in sale since Tuesday, January 15, 2019. This item is in the category "Coins & Paper Money\Paper Money\ US\Small Size Notes\Federal Reserve Notes". The seller is "djdeqdel0" and is located in Pensacola, Florida.This item can be shipped to United States, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Sweden, Indonesia, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Bahrain, Croatia, Malaysia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Bangladesh, Brunei darussalam, Bolivia, Guadeloupe, Iceland, Cambodia, Luxembourg, Monaco, Peru, Pakistan, Paraguay, Viet nam, Uruguay, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Jersey, Jordan, Liechtenstein, Macao, Martinique, Nicaragua, Canada, Colombia, Barbados, Bermuda, Cayman islands, Sri lanka, Maldives, Oman, Reunion, Philippines, Ukraine.