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7764: unmarked doctor's pen: black chased hard rubber eyedropper-filler, 16.1 cm long, recess for thermometer at end of barrel; marked "OPPENHEIMER SON & CO. LTD." and "PALATINOIDS/THE IDEAL FORM OF MEDICATION"; Oppenheimer was a prominent London pharmaceuticals firm, whose patented "palatinoids" were a form of soluble capsule (reference here); the original thermometer is present and Oppenheimer-marked, but the bulb has been broken and the mercury drained; the warranted nib is English, and is probably somewhat later than the pen; there is also a hard-to-find 5mm crack in the barrel which has been sealed (see detail).
DATE: c. 1905 • CONDITION: fine* • NIB: fine flex • $350


8208: unmarked eyedropper-filler: large mottled hard rubber slip-cap with fine silver Art Nouveau overlay (marked "STERLING", but clearly electroformed); 14.35 cm long, unusual barrel construction with black plug at end, nib is extremely flexible but hardly any tipping material left; imprint reads "SOLID/14K/GOLD"; some dings to cap top, otherwise fine.
DATE: c. 1905 • CONDITION: VG-fine • NIB: fine flex
• $965 
9700: unmarked middle-joint eyedropper-filler: clipless black chased hard rubber slip-cap, 13.65 cm long, no maker's name but could be A. A. Waterman or Sterling, cap marked "PAT.APPLD. FOR"; narrow feed, #3 warranted nib of fine quality, good writer with plenty of line variation; owner's name on barrel, surface slightly granular on close inspection due to chemical reblackening. For more on middle-joint eyedropper-fillers, see our Pen Profile.
DATE: c. 1905 •
CONDITION: VG • NIB: medium flex • $165 
2700: unmarked safety: clipless miniature, 8.1 cm long, transparent pale blue enamel over sterling silver with guilloche work; cap crown marked "STERLING", "GERMANY"; excellent quality, some chipping to enamel at edges (see pictures), not inktight (cork seal needs to be replaced); 14K warranted nib.
DATE: c. 1925 •
CONDITION: fine-exc* • NIB: fine flex • $500 

For more pens with flexible nibs, follow these links: A to C, D to O & P to Z