The Parker 51 Pencils are now quite rare simply because they were very good! They were used extensively and most of them just wore out.
Made in the UK this is a mint example of this model dating from the mid sixties. It is finished in Grey with a Lustraloy cap. It is in excellent condition throughout and there are no marks or dings in the cap.
The pencil takes 0.9mm leads which are still readily available. The twist mechanism works perfectly.