Boston Pen (c 1960) Button Filler. Mottled gray/blk plastic; . GF trim. Nib: "Boston 14 ct" fine with moderate flex. Length (c) 4-7/8" capped : Condition: Excellent. Fully restored with excellent function. smooth writer. Manufactured in UK.. distributed in Holland and Western Europe. Has many of the features of Conway Stewart pens of the same period.