QUOTE (lancekatigbak @ Sep 30 2008, 11:42 PM)

Hmmm, could be. But the black part on the top of the cap is missing from the M2.
Don't see a black part on top of the cap at all....Could it be part of the shadow that extends the length of the cap??
The auction just ended yesterday so I am assuming that you don't have the pen yet? If no one is able to give you a definitive answer here on FPN (I'm no expert on these pens...but I own the Esterbrook book

), then posting a photo you've taken of it yourself would help immensely, I'm sure.