That's weird. I used to work for Buzzbike, a bike subscription company. The first bikes they had were Cooper made and had that ridiculous (and incredibly heavy) mudguard. Here's a photo. I wonder if Cooper sold them under their own brand name or if that's a rebadged ex-Buzzbike.
Is that some sort of aero rear mudguard on the Cooper he is selling (too cheap?)
https://www.ebay.co.uk/itm/285923206148?itmmeta=01J268FD4MJ1VY2DRQZ1ZPZ77Q&hash=item429259e404:g:LCwAAOSwW8pmdszd