This is a Parker 51 Aerometric finished in Black with a Lustraloy Cap. It was made in the UK and is date coded for 1955 making it one of the earlier aerometric models.
The pen is fitted with the reliable aerometric filling mechanism which has been fully serviced. It is fitted with a superb Broad Oblique Italic 14ct gold nib and is in overall very good condition with minor wear marks commensurate with light use. The Lustraloy cap is in excellent order with minor wear marks.
This is one of the nicest nibs I have written with for a long time!!!