Nib: Fine 14k Gold USA No.17
Parker Challenger Deluxe c1945 Green Pearl Celluloid with Gold Plated clip and 3 G/F bands, Button-filler Made in USA nib USA stamped 17 Length Capped 11.4 CM Barrel Pat. Pend 25
The Challenger was a school pen that was first introduced in the february 1934 Parkergram, during the Vacumatic era. It was a button filler and was made out of the same plastic as the early marbled Vacumatics.
1937 the complete Challenger series was redesigned. The Standard and Deuxe pens got a tapered clip with the imprint "Parker" on it,