To the best of my knowledge all these nibs are different. The numbers in the left column refer to the nibs numbered in order from the top left to the bottom right. I have noted the pen numbers belonging to each nib in the second column, and the nib size in the third column from the left. This is not a comprehensive list since I prepared it before I had acquired many of the pens in my collection.

Nib location	Pen numbers	Nib size
1	650, 650M	65 Manifold
2	60 Exec	Duro 60 Manifold
3	750M	2
4	Dinkie 526	early no number
5	Dinkie 540, 550	no number
6	Dinkie 526	no number
7	Dinkie 540	no number
8	Dinkie 550	no number
9	Dinkie 560	no number
10	Dinkie 550	no number
11	Dinkie 582M	no number
12	829M	3
13	Shorthand	3
14	Italic	5
15	no number	5
16	Universal	3N
17	no number	5
18	no number	6
19	15	1A
20	16	1A

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