I have kept it for a long time, thinking I may have it framed in my office!
But today I have listed it for auction on ebay.
HERE IT IS ON EBAY with more pictures
I really think it is gorgeous and, if you enjoy Numberphile, it would look superb framed on the wall!
Some people may be aware I recently lost my father-in-law David to cancer.
The care he received in his final weeks was very special and, in some small way, I want to ensure it remains available to all.
Half the proceeds raised from the paper sale will go to the Cransley Hospice in Northamptonshire. (you can also just make a small donation through this Numberphile page)
The other half will go to Macmillan Nurses via a fundraising venture my niece is undertaking.
(Special thanks to Simon who has supported this auction also)