Parker - Duofold - Pen set

Set of 3 Parker Duofold pens in blue resin and mother-of-pearl, comprising a blue roller ball pen (11 mm diameter, 130 mm long), a mechanical pencil (12 mm diameter, 132 mm long), and a click-activated roller ball pen (13 mm diameter, 133 mm long); made in France in the second half of the 19th century, in excellent used condition with minor signs of wear and age, in working order, no box or guarantee.