What is the pen on the WPINOYB cover?

[the raytownian]

And I thought I had weird preoccupations... Are you a pen enthusiast, CG?

 

[Anonymous]

I'm thinking of signing up to a fountain pen enthusiast forum under the false guise of a fellow penthusiast in order to plunder their collective brains on the matter of the mystery Moz pen.
If I make any headway I shall return with the goods.
If I don't return within the next two weeks, call interpol...
Wish me luck, girls!