A little story, to explain my new project.

Whilst working in the shed, I discovered a small box, hidden in the corner. In the rather worn box, lay a pile of papers, and ........ a rather rusted (see pictures) khukri. This has sat in the shed for at least 10 years, the rust is bad, and the wooden sheath is falling apart. However, my new project is to get this back to its original, rust free, state.
Advice and tips are welcome.
More pictures will be submitted as the project unfolds