Early (from the 20’s) ebonite eyedropper Swan Safety Screw Cap (captop in this model was designed to be kind of a crown of the pen), not very common actually. The cap screws on the body, unlike as in other eyedroppers. Amazing wet noodle nib, stubby, with a flex up to 2mm. Very good cosmetic condition, impritnt on the cap clear, on the body faint but still readable. Personalised. Nr 2 Mabie Todd nib. Slim and long, very elegant pen. 13cm closed, 16cm capped.