http://chronomaddox.com/omega/articles/e-mailbox_3.html
....."I have been comfortable with taking John Diethelm's word that Aldrin's watch was a 145.012."
.....
-- Chuck
http://chronomaddox.com/moonmovement.html#John_R._Diethelm
Dave S. posted, on 1 August, 2000 in the Omega Forum, an email from Omega PR (John R. Diethelm) regarding the ST 145.0120-67 model:
Dear Sir,
further to your above inquiry, we have compared your information and have therefore the following available details:
* mvt N° xxxxxxxxxx * manual winding chronograph movement of Calibre 321 - 17 jewels * case reference: ST 145.012 - stainless steel * manufactured and delivered to our Agents in Danemark on October 25, 1968.
It is confirmed that the OMEGA Speedmaster chronographs that went to the " Moon " were of identical reference as your above watch.
best regards
John R. Diethelm / Public relations