Can anyone recommend a modern 6 speed chain with the old time look?
Or am I going to have to bite the bullet and go for a nos regina or Sedis?
Black or gold finish would be preferable.
Yes, I wouldn't bother about hunting down some rare old 6 speed chain. Modern 8 speed chains work fine with 5 and 6 speed freewheels. I use KMC 8.93 which comes with a removable link, but you will have to possibly reduce links to fit your installation. Under a tenner here and elsewhere.