Thank you for sharing. The Guilloche pattern is also really nice. I still carry vintage pens around but I usually put them in a tighter pen pouch so they dont get knocked around and come loose. Enjoy your beautiful pen!
...With that said, it may just be psychosomatic snobbery.
yes the celluloid is still in good shape... the piston moves, just the cap doesn't have much grip anymore... so I leave this pen at home.
Here a photo of the full pen: