Caran d'Ache Madison model set, ballpoint pen and pencil

1970s Caran d'Ache MADISON Swiss Made Alpaca German Silver Ballpoint Pen & Mechanical Pencil Set In Box Manufacturer/Model: Caran d'Ache/Switzerland/Madison Year of production: Early 1970's Filling system: BP: Goliath CdA refills (Original refill included, still writing); MP: 0.5mm leads, leads included Material: Both pens, solid Alpaca - German silver - Nickel and Silver alloy - Silver Plated Length (pen closed): Both pens slim & long 134mm