Looking around in a box I hadn't looked in for a long time, I discovered an Omega buckle I had forgotten I have. So now I have three 16mm Omega buckles which are either authentic or so close I don't care if they're not... and after reading that some regions commissioned their own buckles over the years, who's to say? So I have these three. Care to hazard a guess which era each buckle would belong to? Would the style vary depending on the watch? Trying to more-or-less match the right buckle to a strap for the apparent age of my Seamaster 300 and Speedmaster... both of which are modern but look less than modern. Tom