Sometime ago I came upon a quantity of NOS 9461 nibs. Before I bid on them I did some checking. That is a Manifold nib, made to go through several layers of carbon paper. The shoulders also look stouter on them. I figured both of those points would make it especially good for maybe newer less experienced (slightly hamfisted?) fountain pen users.
I've used 2 of them now, fresh out of the box. Unfortunately it's been a few months since the first so my memory is a bit rough with it.
I'm sure with the 2nd and think so with the first that they are writing finer and drier than a usual Estie fine. That's my "weirdness".
<Shifting brain into gear >
That makes sense, kind of.
It would seem if you were using a pen to write through 3 layers of carbon paper that you'd be pressing down harder than if just on 1 piece of paper. When you press down harder, the nib tips Have To spread apart some wider. If a Manifold nib were (tine) spaced as a normal nib would be, it seems it would likely be too wet, maybe even not flow at all when pressed down harder through 3 layers of paper.
Soooo, yes, it makes sense (to me NOW) that perhaps even brand new, when not used pressing down harder, a Manifold nib might not write as wetly or as wide as a non-Manifold nib fresh out of the box.
Bruce in Ocala, Fl.-who yes, is getting nOOb nibmeister experience I wasn't aware I'd signed up for