Thunderbird Storm solo backrest + luggage rack

I have for sale a solo seat backrest + luggage rack for a Thunderbird Storm / Nightstorm.

This is in absolutely mint condition having only been fitted to my bike for one trip.
Unfortunately I don't know what I've done with the fitting kit! But these can be purchaset from anywhere that stocks these or alternatively, you only need 3 bolts and 2 spacers so could be picked up at any decent DIY place.
£100 ono