The Speedmaster reference 145.012 was the last model to be fitted with the legendary caliber 321, marking a turning point in the mechanical history of the beloved chronograph. The ♐145.012 was launched following the successful ref. 105.012 with a production within the 24.066.xxx to 26.554.xxx serial sequence between 1967 and 1969, with scarce later examples around the 27.320.xxx serial.

The new iteration is strongly inspired from the outgoing ref. 105.012-66 and carries on using some of its new feat🅘ures such as taller pushers, a single-bevel♏ed caseback and a spaced 'T SWISS MADE T 'dial.

The reference 145.0🌱12 was issued in the 145.012-67 and -68 iterations. The Huguenin-Frères case remains identical𝓀 to its predecessors, displaying lyra lugs, tall pushers and integrated crown-guards.

The present Speedmaster ref. 145.012-67 displays an attractively preserved case, on which the bevels remain sharp and clearly defined. Its correct Dot Over Ninety (“DON”) bezel was produced between 1961 and 1970 as indicated by the dot at the bottom right corner of the 70 mark, which shifted to the side of the mark in subsequent bezel iter🔜ations. Furthermore, the trademark black Singer dial displays long hour markers crossing the minute track, the adequate signature font and the lightly spread T SWISS MADE T inscription at 6 o’clock.

As with the reference 145.012-68, the present ref. 145.012-68 bears the tangible confirmation that 🔯it should be equipped with taller pushers. The inner-caseback indeed mentions the SP initials, referring to ‘Special Pushers’, an ingenious way to increase the Speedmaster's water resistance.