This is a Parker 51 Aerometric Double Set finished in Classic Black with Gold Filled caps. The set was made in the UK around 1965 and is a very nice example of this desirable model.
The pen is fitted with the reliable aerometric filling mechanism which has been fully serviced. It is fitted with a lovely smooth Fine side of Medium nib and both pen and pencil are in excellent condition with only light wear marks and scratches commensurate with use. There are no dings in either cap. The set is presented in its original hard case which has a bit of foxing to the interior.