carrier on Ebay

[G166UC]

To anyone who knows!
I have been following this carrier on the e-bay auction for a few days, and I would like to know what the apparatus is on the right rear of the vehicle. I e-mailed the seller and he sent me a bunch of photos that are not on the auction site. One is a good close up of the bracket, but I can"t tell what it is.
By the way, I am sorry to hear that both of you Hanno and Nigel won"t be at Beltring this year. I guess I will have to buy all the good T-16 parts. I will also drink a couple beers for the two of you!
Thanks Rod Shaver