Take a look at Chopard. This is an old LUC 1860 with the spectacularly finished cal 1.96 movement. This particular watch is hard to find, but there are more recent versions.
Also, earlier today I visited European Watch Company (at their brand new location) and was talking with some of the guys there about the amazing old Emil Lange 1815 Moonphase, which you might be able to find for around $30K preowned in rose gold (though I haven't noticed any trading lately) -- platinum will be more though.
