N427 - Onoto #33 Medium Flex Nib (3 ratings) £30.00 Out of stock. 0 in your basket View Basket Checkout Summary; Manufacturer: Onoto. Designation: #33. Origin: UK. Material: 14ct Gold. Dates from (approx): 1940. Overall Length: 25mm. 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!