The ebay ads are for lots of different bikes but usually look like this:
https://photos.smugmug.com/Motorcycl...IMG_1688-M.jpg
Note that the buyer must make his own mount from the supplied oval 'bracket' to the bike.
You can do a search for Pazoma panniers.
FWIW, a guy in the US makes similar boxes in his garage and has done some for the RX3. His Facebook page is here:
www.facebook.com/gosolobox
I have no connection to either.
Peter Y.