From the 1981 Eberhard Faber sales manual:
A professional salesperson will make it his business to learn as much as possible about the competition as well as his own product.
To that end the company provided a “pencil equivalent chart” to their sales force: a list of what the company felt were comparable brands offered by General Pencil, Berol, Dixon, and Faber-Castell. For example, up against the Mongol and Hexaround were the following:
The venerable Editor pencil had some equally venerable company:
But it’s what’s missing that is the most telling. Of the twenty-nine Eberhard Faber pencil brands listed, along with their competitors’ equivalents, there is no entry for the Blackwing.
Perhaps the company thought there was just no comparing.