Postcard Recipients
Some pictures from Numberphile fans who received our "89" postcard.
It's a limited edition of 89, but there are still a few left.
They deliberately come through the normal post without an envelope, so get all sorts of nice stamps and cancellation marks!
@dan_lapsley was happy to get 55 - a palindrome!
@PAShanky was pleased to get 42
Simon in Switzerland
Lance in San Diego
@mathslinks may frame this one
Here's the video which the postcard is from...