Vintage Onoto De La Rue Overfeed BCHR Fountain Pen, Unrestored, Slip Cap

  

This is a very interesting Vintage Onoto De La Rue black chased hard rubber (chevron design) fountain pen with a plunger filling mechanism that requires restoration. The most unique feature of the pen is the over/under feed dynamic seen on the nib.

Makes for a very unique writing experience and is a feature seen on some early pen models. I find it provides a fascinating look.