N591 - Swan #4 Medium Flex Nib (2 ratings) £40.00 Quantity: at £40.00 each Add To Basket 0 in your basket View Basket Checkout Summary; Manufacturer: Mabie Todd. Designation: Swan #4. Origin: UK. Material: 14ct Gold. Dates from (approx): 1945. 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!