The writing sample provided in the image has the fine stroke measuring at
but you can see under magnification a couple areas with very small amount of brassing
91mm with normal to medium pressure when I measured with digital calipers
The top jewel is black and has been polished to bring back a beautiful shine
This is an excellent condition vintage Parker 51 Fountain Pen that is in ready to write condition or just add to writing arsenal collection
RESTORED 1940 PARKER VACUMATIC DOUBLE JEWEL FOUNTAIN PEN IN SILVER PEARL CELLULOID Mabie Todd The writing sample provided inFor your consideration we are offering for sale this Restored 1940 Parker Vacumatic Fountain Pen in the Silver Pearl Celluloid. This fountain pen has been thoroughly taken apart, cleaned and put back together and now is in wonderful writing condition. I have ultrasonically cleaned the NIB, feed, section, breather tube, cap and barrel. Replaced the old diaphragm with a new, properly sized one. Hand polished the Nickel Plated Blue Diamond Clip, Chevron