Omega Speedmaster 145.022

It's going to be a lot harder than you think I am afraid. If you need a watch that would return an extract date as having been produced in 1969 then there are actually 3 reference you need to consider, the 145.012-68, the 145.022-68 and I think maybe a few 145.012-69s, though the first and last are more commonly seen in other years. The most numerous from that year will be the 145.022-68, known as the Transitional, these were made for the bulk of that year. Unfortunately both these (which use the 861 movement) and the earlier 321 movement 145.012-68 are rather more expensive than the later iterations like the -69 or -71. A 27m serial will certainly be thereabouts but doesn't guarantee 1969 production either.

It will be a lot easier and cheaper to buy a 145.022-69, but that will most likely have been made 1970-71 so you may have to decide what is most important, the extract date or the case iteration.

As noted above, Take a look at the excellent website, Ilovemyspeedmaster.com which has a reverse search allowing you to work out models and serial for a given date. The picture is a little confusing the years either side of the moon landing with lots of seemingly overlapping iterations.