My old 1084s CBM monitor died (nearly 20 years old) the monitor itself was skipped but i still have the RGB to Din cable if anyone wants it,It has the Amiga end 23pin RGB and a round din 6 pin on monitor end ,sorry i didnt keep the monitor model number so make sure your 1084s has the round din plug to accept this cable as i do know not all monitors/cable were the same.It is free but i would ask you to pay £2 post.
Thanks