This is, to my eye, the most elegant of the 140s, in black with white metal trim.

Apart from that, the images tell the story.

We have three. One pen has a sticker (PE 4588). SOLD

The other pen does not (PE 4589).

And a third pen shows light wear, has a modern Italic nib and is offered with three additional modern nibs customized by Richard Binder (GSH23)

(Representative Image)