Worth keeping 'ALL' the bits and bobs?

[seadweller30]

Will definately keep them, they have sat in the box for the last 8 years, it wont do any harm to keep them for another 8. Hes still alive thank goodness. He sold me the watch relatively cheap I feel, as the watch had very little wrist time. Only wore it when he was on holiday, rest of the time stuffed under his wardrobe due to the Sea Dweller being his everyday watch.
I was intrigued with the slips of paper, although couldnt understand why on earth an AD would write such a thing as it seems very unprofessional, not something I would expect from Lunn's as its the most respected jeweller in Northern Ireland. I thought they were nice little extra's, albeit to most people, unimportant ones .