Someone had put some brown plastic sticky tape on the rear bumper to mask a nasty crack. The tape had cracked as well, so it looked quite desperate.
I removed the bumper to fix the crack and decided to clean the surface rust off the back panel. I brushed and sprayed some black Waxoyl on the panel to delay future rust.
I used some glass fibre matting and resin to glass the cracked parts together.
Then some more glass, resin and filler to smooth the top panel.Sanding the whole bumper revealed a few more cracks so smooth out.
Next and last some freshly canned paint in the correct shade of "Clove" made the bumper look quite respectable.