N439 - Onoto #5 Medium Flex Nib (4 ratings) £45.00 Out of stock. Summary; Manufacturer: Onoto. Designation: #5. Origin: UK. Material: 14ct Gold. Dates from (approx): 1940. Overall Length: 30mm. Writing Width: Medium Flex. Notes: All sizes and measurements are approximate. Any replacement nib may need some adjustment when fitted to the pen. We can fit this nib as part of a service on your pen, email us for details. Postage in the UK is free on this item!