I have come across a few Pitman pens in the past, and was of the view that they were all made for the Pitman Short hand college by Waterman UK. Examples of the "Pitman Fono Leverfill" and the Pitman Fono Deluxe" had characteristics that would support this view, notably their very Waterman-esque feed.
Recently I picked up a PITMAN SUPER FONO PEN off ebay, which is less obvious as to origin;
The split cap is something I link with DLR and Wyvern. My Waterman collection is very small but I cannot recall having seen this design on any of their models.
It has a box lever, and I have only seem one very early Wyvern with this kind of lever system.
The nib is a warranted 14ct marked A.3
Any one able to throw any light on the origin of this example?