The two best known are Orion from Japan and Cook and Perkins from England.

The third is called Stewartry. They were made in Scotland by the McGregor company. McGregor also made adapters to fit several English made lenses.

These adapters are ultra rare and are made to adapt to Contax or Nikon tele lenses. I have successfully mounted it on 85mm F2 Nikkor-S and 135mm Nikkor S. Shown on both an M10-R and a Barnack body. 

I have several of these adapters and will be selling them with the understanding that they are a highly collectible and very rare item. I have tested them and know they work on SOME lenses. I can't guarantee they will work on yours.

CAMERAS IN LISTING ARE NOT INCLUDED IN THE PRICE.