Когда-то давно хотел купить спидмастер и досконально изучил вопрос. Дело в том, что среди нынешних моделей "тру" не найти. Вот прочитайте:
The original Speedmaster used a Lemania-based hand-wound chronograph movement with a column wheel actuation mechanism. This movement, known as the caliber 321, was produced until the late 1960s and was in the watches that were worn on the moon. OMEGA proceeded to completely change this caliber, opting instead for a simpler cam-actuated chronograph movement that was cheaper to produce and easier to build and adjust. This was the caliber 861, and, despite OMEGA’s proud pronouncements, this movement never made it to the moon. Finally, the current caliber 1861 added another jewel to the movement and replaced a metal brake with a plastic one, and though probably more 1861-equipped Speedmasters have been sold than any of its predecessors, it is the least desirable of the lineage.
Make no mistake, the caliber 1861 is a fine movement, and one can understand why OMEGA made the changes it did for a watch that was purpose-built. But from a collector's perspective, the caliber 321 is the one to have.
Если же вы не хотите брать винтаж, то выбор невелик.
3570.50 - с пластиковым стеклом (тру) и пластиковой деталью в калибре ("replaced a metal brake with a plastic one")
или
3573.50 - сапфировый сэндвич (не тру), зато калибр полностью металлический.