Pilot MYU Black Stripe Stainless Steel Short Fountain Pen

This is a rare  Pilot MYU Black Stripe stainless steel fountain pen with an integral  nib. It was produced in the early 1970s and was only available in Japan.

There is small dent on the cap, the clip has corossion. need to be cleaned, no crack and no engraving name

Refer to the pictures for detail

Thank you