Heuer Solunar Ref 279 603.
From the 70's. A nice extract of the catalogue ( Credit: Heuer ). Ala Bill... Best, Nicolas ...
I have that catalog now in front of me
Ok if I post some photos including the price of these watches Do know that last will give you a heart attack 😁
And the price
You have to decide by 40’to get it in euro So all these steel models were between 200 and 350 euro ...