In addition to that Rolex GMT Master, I've been looking at these Omega Speedmaster 125
models. They were struck in 1973 to celebrate Omega's 125th anniversary. This thing is
huge, especially as a vintage, at 42mm wide and a whopping 51.5mm lug to lug. Its mass
comes in at 182.9 grams. The movement is the Omega (Lemania) 1041 automatic
chronograph/chronometer. I'm setting my sights on one, but it'll have to be a bargain
because they've been selling for $3000 or more.