Pelikan. Model 400NN Fountain Pen - DEF Nib A Pelikan Model 400NN fountain pen, circa 1950s–1960s, the barrel in striped green cellulose acetate with black cap and gold-plated fittings, the cap band engraved Pelikan 400NN – Germany. Fitted with a 14C gold DEF (Double Extra Fine) nib, designed for firm, high-pressure writing suitable for producing carbon copies, and a piston filling system. The 400NN represents the refined evolution of the original Pelikan 400, featuring a slightly elongated and streamlined profile. Examples fitted with DEF nibs intended for manifold (carbon copy) writing are particularly sought after. Model: 400NN Type: Fountain pen Nib: 14C gold DEF (manifold/carbon copy type) Filling system: Piston Period: 1950s–1960s Condition: Very good vintage condition Accompanied by: Pelikan box Shipping: Shipped worldwide with tracking.