Nice complete bike. As A-ko said, clean it up and get it running. You have everything there, including the often missing recoil.
It's not the most sought after model, but it is unique with the hard tail. There were about 1,500 made. All other models had full suspension. It was Arctic's entry level model in 1971. Still though, it's a great find.
PM me if you need assistance with getting it to run. The Saxonette is a simple and fairly reliable engine, but it requires a few key bits of care and attention. Be very careful with the fragile recoil. Seriously, contact me if you want to get it running. I love the Saxonette models.