Some great shots from Rich Crosthwaite (@heuervintage on Instagram) of a prototype Heuer Montreal made by case manufacturer G. Ruedin S.A, a company that today is owned by Swatch Group. Heuer ended up using a different case manufacturer for the Montreal, possibly because there was unrest at Ruedin in the early 1970s that saw the company sold in 1971- the final Montreal was launched in 1972.
Got an opportunity to purchase one with the original bracelet I can see alot of stuff from this watch.
1. Has the exactly same case as Heuer Montreal Prototype
2. Same movement
3. Caseback said G|R SA (Might be G.Ruedin in short).
The bracelet looks amazing feels like an oyster bracelet
