Onoto 3500 BCHR (Black Chased Hard Rubber) SENIOR size Fountain Pen 1920. 14C F FULL Flex Nib. Boxed. MINT N.O.S. New Old Stock Condition. ZERO cracks. splits or repairs etc. Just been serviced by Onoto recommended service technician. Warks and writes as when new. Beautiful example. As good as they come. Looks to have never been used if even handled in its life. Always looked after never abused. Mostly living in its box. A true treasure. MINT. Jet Black never been restored with zero oxidation. True mint. Very rare to find this perfect. Chasing is fine barley and immaculate. The Barrel imprints are deep and easy to read as when new. Never been polished. 

Of course the real STAR of the show with this rare pen has to be its amazing 14C M Full flex nib which is a simple JOY to write with. Ultra smooth with zero paper scratch. Writes with an elegant Medium line down stroke and has Fine line side stroke. Ultra creative. However, this pens nib really comes alive the moment you exercise its flexibility. On the down stroke it can flex all the way to past double Broad. A nib so creative its only true limitation is the imagination and writing ability of its user. This nib is fabulous to write with. Onoto do not make nibs this sophisticated anymore. Not since the 1950s. Grade A+++++++++++++++++++ Nib. For the writing Connoisseur.