Sailor Jentle Black Ink (Bottle)
I purchased this strictly to use in my Sailor 1911 Large (H-M) pen. It flows well and appears as a true dark black without overtones, and doesn't feather on cheap paper. It seems to be more lubricated than my Noodler's black, which also seems to have a greenish tint when wet, but dissipates when dry.
When tested for water resistance, the Jentle will bleed quite a bit and discolor the paper, but still leaves visible writing. The Noodler's black does not do this and is a better choice for permanence, such as check writing or addressing an envelope.