The Parker 21 Mk.1 is markedly different from later versions in that it has a larger opening in the hood exposing a distinctive rounded, almost bulbous feed and has a 'ridge' clip, this was changed shortly after production started in 1949. It is now quite a rare pen.
This is a particularly fine example, in mint condition throughout. Finished in Burgundy, the barrel bears a legible date code for the first quarter of 1955, a very late pen for a Mk.1.
The 'Octanium' nib performs very well, delivering a smooth, fine line. It would suit someone with a small 'hand' and be useful for detailed work.
The Parker 21 is an extremely good choice as an unusual and dependable every day writer and is often favoured rather than the much more expensive Parker 51 to which it bears a close, if superficial resemblance. It is an excellent pen in its own right and a Mk.1 in such excellent condition is hard to find.
Read my Parker 21 Review here.