The below evolution pictures I found on internet are of Samurai S0551XX Type I Jacket, inspired me and helped me decide which brand I should select for my next denim jacket.
The denim used in both Samurai S0551XX and S0552XX is the same 15oz Texan cotton.
In these pics you will notice one the the best evolution of denim jackets that is available on internet, nice fading is far better than other competitive high end brands. Rusted buttons are certainly one of the finest details that you reach during the journey of denim love.
In my S0552XX jacket, I notice size of custom iron buttons are in great proportion (i.e. perfectly sized), looks great, feel rugged and soft. Yellow thread construction in most of the front parts, looks amazing, contrasts beautifully on indigo (you can say denim wearing gold ornaments).
Samurai is Samurai of denim.