Peliikan 400 w/HOB nib

[Sagebrush64]

Can anyone tell me what the H stands for on an Oblique Broad nib???:crazy_pilot:

[carlos.q]

It means it's a "Hard" (Hart) nib, that is, not flexible. I thought these nibs only went from HEF, HF to HM.
How about some pictures of this rare bird?

[Ondina]

I agree, it means "hard". Hard Oblique Broad, in your case. There is people that prefers them that way for several reason, such as accounting, or just because a personal reference. Congrats, they are not very common (i.e., the ones marked as such).