I keep seeing 4.2 mm but also reports of 5.5 mm (for both the solid and display back...) Also I just noticed the ref may be different after all: Solid back is 145.8.79 and display is 145.8.79.s
I've been researching and pondering this for a while, it seems there are two variations of the original MUT (34mm with caliber 849), an earlier one which has the solid caseback and a later one (more commonly seen) with a sapphire caseback. Both reference ...
The MUT 34mm launched in 1992, started with Cal 839, but introduced Cal 849 in 1994. The exhibition back debuted in 1999 with the Master Blacks - MUT, Master Moon, Geographique, etc. In 2000, the silver dials began to have exhibition backs. My favorite wa...
I keep seeing 4.2 mm but also reports of 5.5 mm (for both the solid and display back...) Also I just noticed the ref may be different after all: Solid back is 145.8.79 and display is 145.8.79.s
Mine is the steel Master Black from the late 1990s, so I can can offer a caliper-verified measurement of the 145.8.79s with display-caseback tomorrow. My understanding always has been that the display caseback added 1mm to the thickness of the solid-back ...