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!

@dan_lapsley was happy to get 55 - a palindrome!

  @PAShanky  was pleased to get 42

@PAShanky was pleased to get 42

 Simon in Switzerland

Simon in Switzerland

 Lance in San Diego

Lance in San Diego

  @mathslinks  may frame this one

@mathslinks may frame this one

Here's the video which the postcard is from...