Speedmaster Moonwatch Professional Calibre 321

Platinum case and platinum bracelet together push this well past a hundred thousand dollars, and the weight on the wrist tells you where the money went before the movement even factors in. Caliber 321 inside is the re-engineered historic chronograph movement, mechanically distinct from the standard Moonwatch caliber, with the small seconds off-center exactly as the vintage dial design dictated. Water resistance stays at 50m — precious metal doesn't change the engineering brief. Of every Speedmaster in my catalogue this is the single most expensive, and on value-per-dollar it scores accordingly poorly; on rarity and metal-plus-movement combination, nothing else in the range comes close.