Thanks..Yes my friend Alpenschneerot,you have right with ref,is 168.004 with hiden crown.I told Jumbo because is bigger then other C edition from that years,have 35,7 mm without crown.Other editions have .under 34 mm without crown? Is ok and for that days,is like a Portofino from IWC,like some Jaeger Lecoultre,etc.Omega vintage is beautiful.Maybe one day i will find a vintage Seamaster,i like it.Sorry for my bad english...
Very beautiful that model,is gold or gold plated? I wanna find one day a seamaster 300,with rotative bezel,something like Submariner from Rolex...aomething likeref 165.024.Is amazing watch.