Nipple dial for my 16808

[TimeLord2]

I do understand. I think the transition to the newer dial was around 1984. Dials for your model do seem to fetch a premium compared to earlier 1680s. From limited research, and the crap examples I have found, with dial, matching hands, and an attractive bezel insert it might be ±6-7K to complete. Not counting a service.
https://www.ebay.com/itm/276665752618
https://www.ebay.com/itm/225934899282
You might try The Ridley's (Phillip or Bob) or Ric Dietal to see if they could help you in your search. They may have access to more people hoarding parts. Might be a little more but given the time you have already spent might be worth it. Good luck!