I am leaving the company I currently work for in two days. I currently use a hhkb pro 2 and really enjoy it. I inherited it from another colleague who asked for the company to purchase it for him while he was on-boarding. He left it at the office since "he wouldn't feel right taking something had paid for". That made sense to me and I definitely don't feel right stealing company property.
However, the keyboard is quite specialized (no labels on the keys, unusual layout, small number of overall keys) and I know that it will probably end up sitting in storage, unused for an extended period.
What would be a professional way to approach my manager to ask if I could purchase the keyboard from the company?