Finally found d the original Furnace Gold article hidden away inside a folder I used to keep cuttings of all the magazine article flies in.
Trouble with memory is, you might think you're 100% correct but sometimes you're not, as is the case here with me and the Furnace Gold.
I'd forgotten that the body wasn't " solid gold" but open turns to give a segment body ( exactly same as a Pennell but with Gold, not silver.
So here it is, the original Furnace Gold, just have to go away and redo all those variations now 😃