Designed in 1972, according to Museum für Gestaltung Zürich, Reichardt, Naylor.
A second variation with finer hairlines was not released by Letraset.
Contributed by Quentin Schmerber
Contributed by Stephen Coles
Contributed by Florian Hardwig
Photo(s) by “spike spondike” on Flickr.
Photo(s) by Florian Hardwig on Flickr.