I think that the ideal finish for a pen is CA glue. I prefer the medium-thin grade. It goes on very quickly and you can put on 3, 4 or 5 thin coats in a session with perhaps only a couple of minutes between applications. It also sands and polishes very well. Of all finishes for a pen, it probably the best in terms of resistance to wear. So, if it was me, I'd throw out the 5 year old Mylands or use it for something else.