Montblanc 1960s No 12 set of four fountain pens. Burgundy, Green, Black and Grey

This is a set of four Montblanc No 12 fountain pens all in good condition. Montblanc made 4 colors of this pen in the 1960s and Burgundy Green and Black were the most common. Grey is rare.  All write exceptionally well and can easily be daily carry pens.