Can someone help ID this pen? Thanks.

An English Parker Duofold with an Eversharp nib?

Looks like a Blue-Diamond Parker vacumatic with an Eversharp nib - perhaps put on for it's flex?

John

If I were guessing, I'd date that Blue Diamond Parker Vacumatic to about 1946. It looks U.S.-made, not British. That nib, on the other hand... <_<

Ok. Let me ask about "Blue Diamond" aspect of the name. In one of the pictures the pen looks a little bluish. But in person, it is as black as can be. Did you think it was a "Blue Diamond Parker Vacumatic" because the picture looked a little bluish?

It refers to the blue diamond on the clip

It's the little blue diamond on the clip, which is supposed to be a "lifetime" guarantee of some sort, something like the Sheaffer white dot. I agree that this pen looks more like a black Vacumatic than an English Duofold.