Building off the nostalgia for the Parker 51, the company launched what they hoped would be a more modern version of the pen in the Parker 100. This set included both the rollerball and ballpoint version of the pens in the original box. To be honest, it is quite possible they were never sold as a set in the box when they first came out, but that is how we found and are selling them. Each instrument looks great and works well. There's a little scuffing from the cap snapping to the section of the rollerball. Otherwise, they are still cosmetically beautiful. Each has its respective working, black refill.