AC420: osmiroid Rolatip Replaceable Nib Unit, Medium Soft.

Date: c1960s

Size: N/A.

This Osmiroid nib unit is new old-stock.  It is in excellent undamaged and unused conditon.  The nib itself is gold plated.  These nibs not only fit Osmiroid pens, but also most Esterbrook pens and even those few Burnham pens that use such nib units.  

I currently have 10 of these nibs.