ISTD brief - The Beauty of Maths Fold-out Poster

This luxurious poster is a keep-sake piece for lovers of maths and fans of the mathematician Leonhard Euler, printed in black and gold risograph ink on G.F.Smith paper. It is a mathematical puzzle in itself, giving the user the satisfaction of working out the origami folding behind it to reveal the most beautiful equation in the world - Euler's Identity.