Further info in response to a couple of PMs:
I'm not sure of their age, as they came to me on a used bass. Chromes behave as follows: when brand new, they have an initial 'zingy' stage; then after a short while they settle down to be slightly mellower, but still with high end content, where they spend most of their life. These ones have been broken in and are in that second stage.
£37 collected from Bristol, or +£3 UK postage. Update: Now £30 posted
RightOn make great, comfortable straps, with an accurate adjustment system. This one is pristine as it was bought new but then used literally just once.
Width: 3.15" (8cm)
Adjustable length: 37.4"–59" (95–150cm)
https://www.rightonstraps.com/en/bass-strap-black-vegan.html
StewMac truss rod tool, unused. It's to adjust a heel-end truss rod. They call it a 'Tele' crank but reading the comments on this page suggest people have used it successfully on JMJ Mustang and P basses.
£10 posted