The Parker 51 Aerometric was introduced in 1948, replacing the original Vacumatic version. In 1957 Parker stopped advertising their 'Superchrome' ink on the filler sleeve and added a 'halo' to the cap lip in 1958. This example has no reference to superchrome and no halo so it can be dated to 1958.
The pen is in exceptional condition throughout. It has been thoroughly cleaned, serviced, and tested. Finished in classic black, it has a ding free lustralloy cap with a Chrome 'arrow' clip and a pearl end stud.
The filling system takes up a good volume of ink and the 14Ct.Gold nib is a truly great writer. It is super smooth and lays down a consistent, 'wettish' medium line. The hooded nib design precludes any flexibility in the Parker 51 but Parker somehow managed to give it a pleasant soft feel, it is a very easy writer.
The Parker 51 has been described as 'the best pen Parker ever made' and this example certainly supports that claim, it would make a first class, and prestigious, every day writer.