Bill $20 palindrome

Good condition no rip no stain no writing of any kind on bill Circulation bill What makes this bill special is the following 61599516 Contains 4 digits only Contains 4 pairs If you read first 4 digits reads 6159 If you read last 4 digits backward reads 6159 that makes it a palindrome serial number I would rate bill 8 of 10 because it is not a brand new uncirculated bill And it is not perfect Take a look to all pics provided and official description for the bill