I began this pen & ink with rotting ink on butcher board a long time ago, and the completion was so painstakingly slow I put it aside for many years.
Then I saw it again and finished it off with a black Staedtler pen. I never really liked using the old rotting pen, the nibs would go dry and you had to frequently clean them or need to replace them.
The black staedtler pen is much easier to use.
I then got it framed knowing if I did not the picture would deteriorate. Hence a reflection from the glass of the framed picture.
Have you ever done a Black & White drawing in black ink?