The barrel especially shows a lot of discoloration. The nib is marked with a star and what looks like a. It's not the old Duofold style nib, but it's nice. The item "Vintage Jade Green Parker Duofold Senior. Later style nib" is in sale since Tuesday, September 17, 2019.This item is in the category "Collectibles\Pens & Writing Instruments\Pens\Fountain Pens\Parker". The seller is "wrou2497" and is located in New Rochelle, New York. This item can be shipped to United States.