Hi,
wondering which pencil had a side-button first, we already talked about the Knips.
The 19th century “Presto” (from italian ‘quick’) by Sampson Mordan was a pusher mechanism, although pushing just extended the whole pencil twist mechanism, not just the lead.
Which reminded me of some japanese gravity drop vintage pencils, here’s a list:
- Sakura Freematic: Front-drop pencil
- Uni Flicker, BOXY Flicker: Rear-drop eraser
- NEWMAN Ball & Sharp: Rear-drop ballpoint pen
- San Xing 702 (similar to Newman Ball & Sharp. Chinese.)
- Newman AB500S
- Sigma SBF-55 (similar to Newman AB500S)
- Sigma SBF-505
(Hsi-chi shared about the last four. Go follow him)