Parker 51 18K Nib. (Broad) N600 £35.00 Quantity: at £35.00 each Add To Basket Summary; Manufacturer: Parker. Designation: 51. Origin: UK. Material: 18ct Gold. (rare) Dates from (approx): 1952 (Date Coded). Overall Length: 22mm. Writing Width: Broad. 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!