Produced in 1967-1969

The last of the calibre 321 speedmasters. In two identical executions, the -67 and -68. The -68’s seem to be very scarce.

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26552403 145.012 c
145.012-67 Charming brown dial and patinated hands. Poor but correct bezel. Note clean pusher tubes from recent service.

This reference was the last calibre 321 to be flown by NASA. At first glance it is similar to the preceding 105.012-66, though the pushers are larger at 5mm x 3.5mm, which is the same size as fitted to the new Speedmasters today. The case back remains a single step Hippocampus.

This is the most affordable 321 Speedmaster, and consequently it spend the longest time languishing in sub $1000 territory. (Some while ago now!) This value made them uneconomic to service, so care must be exercised in choosing one that has not been neglected.

I am fairly sure all bezels were DO90 and chrono hands were spears, but that it was on this reference we first see the flat ended spear toward the end of production. It appears that both these Chrono hands were fitted together.

The reference also came in a Racing Dial version. While very few have been seen, (the figure 50 has been heard when referring to production numbers), the few I have heard about trade for $15,000 – $25,000.

145.012-67’s. On the left is a drop end chrono, and on the right the flat, or square end. Note the log indices, AML dial, and DO90 bezels.

Calibre 321

Serial Range:

2406 xxxx – 27xx xxx


  • Stepped
  • applied metal logo
  • Professional text
  • Wide spaced  SWISS MADE T’s
  • Long indices


  • Asymmetric case, 20 mm lugs
  • Caseback- single step with speedmaster engraved on rear


  • Hour/minute – baton
  • Subdial – Stick, painted
  • Chrono – spear, later square end spear fitted concurrently


  • 5mm x 3.5 mm


  • 7mm


  • Black BASE 500 bezel with dot over 90 (DO90)

Now we look at the most numerous reference, the 145.022

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