This is an Aerometric Parker Duofold Junior dating from 1958 (according to the box). It is in very good condition with only minor marks and scratches commensurate with light use. It is finished in the rarer green colour with gold filled trim, the plating shows very little sign of wear.
These pens were extremely popular and extremely reliable.
The pen is fitted with a lovely Medium nib and it uses the reliable aerometric filling system.