To mark Parker’s 100th anniversary in 1988 a new design of the Duofold was introduced. It was very much a re-creation of the 1921 model with straight sides to the cap and barrel.
Parker Duofold Centennial and International Pens
The modern Parker Duofold fountain pen comes in two sizes: the larger Centennial version, and a smaller International. Additional nib sizes are available. There is only one size of ballpoint and pencil.