Waterman Registry
Waterman Catalog, archive.org [source]
Waterman · c. 1900s-1920s
Waterman 76
Eyedropper
Filling System
Eyedropper (screw cap)
Nib
14k gold (#6, XF)
Material
Black hard rubber
What to Look For
Screw-cap eyedropper with #6 nib. Confirmed from web search results as having XF (extra-fine) nib.
Screw-cap eyedropper with #6 extra-fine nib.