As mentioned in the March 21st post (), the matching pair that sold at auction last year for $7200, was being re-sold on Ebay. The final, and winning bid, was $9301.58 US.
A few days ago the owner of the bill mentioned that the bills were re-graded and now officially have the "ERROR" designation.
Useful Links
Serial Number Submission Form: https://project2013b.blogspot.com/p/submit.html
Project 2013B Database: https://project2013b.blogspot.com/p/2013bdatabase.html
My store (including currency themed items): https://1zin.short.gy/2013store