The Writing Desk Reference Section: Questions about ink
What does WES stand for on Diamine Imperial Blue?
Imperial Blue was first produced in 2005 as a limited edition to celebrate the 25th Anniversary of the formation of the Writing Equipment Society. This first batch has a special 25th Anniversary silver label as well as the usual Diamine label. A year later, at the end of 2006, the ink went on general sale but still labelled "WES" for "Writing Equipment Society".