Not sure how useful they are as it's the same spring and cover missing on each side and it's a different spring to to other in the range, so you'd need to find a full set of something else that fits correctly.
No mounting bolts (oddly quite an important cost increaser as they as specific to these canti's) the pads are worn and the red ones are 3rd party and easily bought.
Rear has no logo's left.
Also they are not exactly rare.
Great for someone fixing another set up though.
If you could find the two other springs and covers and the mounting bolts and washer you'd get a better sale.