That Favre is a rare old beast alright. Sad to lose it. :(
Here's a few of mine.
Left hand crown. To show off how you didn't have to wind/set it so often I suppose. Or Cos the 70's :) It's a right expletive deleted to set it when you do need to though. I have a second example that came on a strap only with a linen dial.
Consul with an IBM punchcard dial. Couldn't be any more 70's if it tried.
They were bought into by Girard Perregaux at the time. Seemed to sell ladies pendent watches for the most part, with the occasional chronograph. When I asked GP years ago they had no record of this watch being produced.
And my Tron dial GP. With the original GP stamped Milanese bracelet.
Oh the years I quested for that one. I know your journey Redwolf.
I was surprised at the quality of the dial printing. It's quite three dimensional as it were. There's a gold version but it doesn't have the depth of paint and only one colour compared to three. They're just as rare though.