Having read that the Esterbrook Nº 356 was Carl Barks' pen nib of choice for inking his work, I got some to try. The Esterbrook Steel Pen Mfg. Co. itself has essentially been gone for decades, so one looks for
NOS; the nibs that I got are ostensibly from the 1940s.
Having got nibs, I wanted an Esterbrook Nº 35 holder for them. Again, it would be some decades old. I found one in a set with 12 nibs of varying size.
Well, it arrived on Friday, with the paper seal still intact on the box. I cannot open the box without committing some crime against antiquarian preservation!
I am defeated. I will look for another holder for my nibs.