This is a Parker 51 Aerometric finished in Teal Blue with a Rolled Gold Cap. It was made in the UK and is an excellent example of this very popular model from the mid 60's.
The pen is fitted with the reliable aerometric filling mechanism which has been fully serviced. It is fitted with a superb smooth fine 14ct gold nib and is in overall very good condition with minor wear marks commensurate with light use. The rolled gold cap has some very minor blemishes (not dings) and the clip is showing very light signs of wear at the edges.