The Speedmaster 125 is a special watch. It was released for a special occasion (the company’s 125th anniversary in 1973), it has a special movement (cal. 1041, the chronometer certified version of already special cal. 1040) only found in this piece, and it comes in a case and on a bracelet that were both only used on this watch. Perhaps it is the chronometer certification which is most special, as this was the word’s first chronometer certified automatic chronograph. It was described early on as a “commemorative” edition, and later as a “limited” edition. Per most sources, including the extracts of the archives, there were only 2,000 made. No matter how many were made, the 125 was and remains a big deal.