Montblanc 644 - Flexible Nib (SB577)
Nib: Medium Flexible 14 Kt
I love the Montblanc 644 - one of the few pens where I willingly own duplicates. This one is on consignment. It's in excellent condition, with the only flaw being a barely visible ding near the tassie. The nib is a medium two-toned flex with good variation on moderate pressure (I would say it flexes when you intend, but not unless). This could be a great pen to use regularly. Other than the micro-ding, it looks like new. 5 3/8", 135 mm.