8660 Parker Duofold Senior in Green, c1965. Smooth Medium FIVE STAR Nib.
1927 PARKER DUOFOLD SENIOR BLUE LAPIS FOUNTAIN PEN IN RESTORED CONDITION
Vintage Parker Duofold Senior Big Red Fountain Pen Box
Sold at Auction: A Parker 'Duofold Senior' fountain pen,
CIRCA 1926 PARKER DUOFOLD SENIOR "BIG RED" LUCKY CURVE FOUNTAIN PEN RE
9648 Parker Duofold Senior Streamlined Fountain Pen in Lapis Lazuli, c1930. Fine Italic FIVE STAR Nib.
Parker Pens Penography: DUOFOLD
Parker Duofold Senior Fountain Pen (1920s) - Red w Raised Band and GT, Button Filler, Medium-Broad Parker Duofold Nib (Excellent, Restored) - Peyton Street Pens
1950s PARKER DUOFOLD Senior Aerometric Made in England 14K Gold F Size Nib Black Celluloid Fountain
Parker Duofold Senior Streamline Fountain Pen (1929) - Mandarin Yellow, Double Band, Medium Nib (Excellent, Restored) - Peyton Street Pens
VINTAGE PARKER DUOFOLD SENIOR BLACK MADE IN CANADA 30'S FOUNTAIN PEN | eBay
Parker Vintage Senior Duofold Pen Red Hard Rubber working--fine point | eBay
1927 PARKER DUOFOLD SENIOR BLUE LAPIS FOUNTAIN PEN IN RESTORED CONDITION
Parker Duofold Senior Deluxe Fountain Pen Set (1930s) - Black & Pearl Moderne w/GT, Button Filler, Fine Duofold Nib (Excellent, Restored) - Peyton Street Pens
Vintage Parker Duofold Senior Big Red Fountain Pen Box
Parker Duofold Senior, Red Hard Rubber, Raised Cap Band, Large 14K nib
CIRCA 1932 PARKER DUOFOLD SENIOR STREAMLINE RED PERMANITE FOUNTAIN PEN RESTORED