Rare limited-edition; NOTE: This is a color variant outside the regular edition Initialed "MCE" in the plate lower right Catalogue raisonné: Bool #382 Published by 'Boekckier', Journal of the Foundation Dutch Exlibris Kring-second range, 3, Volume 14 July 1959. Custom frame dimensions: 21" high x 16.75" wide © The M.C. Escher Company B.V. Here, ants vibrate with the energy of a swarm as the composition jiggles with frenetic electricity.