Classic vintage fountain pen featuring a faceted green marbled celluloid body and cap with a gold‑tone pocket clip.

Screw‑on cap; blind cap at tail reveals the piston knob as shown.

Nib: gold‑colored, engraved "14K" with additional faint text visible in the photos.

No external brand name or model markings observed on the barrel or cap.

Filling system: piston filler (see photo of metal assembly under the blind cap).

Length is shown next to a tape measure in the photos for scale.

Great candidate for restoration or display; see all images for exact condition details.

Notes: sold as found; piston and nib have not been tested with ink.