Sunburst nibs are rare treasures for Esterbrook collectors. Click the headline to see a close up of the sunburst 3556 "Osmiridium Tip" nib on our Esterbrook Dollar Pen set. We restored this handsome grey vintage pen with a new ink sac. No cracks, only minor wear from use. Its matching pencil is also on the rare side, as it is an early clicker lead-advance pencil. No eraser, but it has spare 1.1mm leads. Back to the fountain pen, its nib has some loss of luster on the nib. However, the nib writes a nice fine line with a little feedback. Pen measures 12.1cm capped.