Thanks Richard. And cheers for the tip re the JB. They're certainly different.
I know you've got heaps of information. Do you have the list of NASA watches with all the movement numbers? Found it last week but my google skills have escaped me this weekend. I know I'm miles away from Armstrong's but it would be interesting to see if I'm close to any of the others.
Any thoughts on that "B5215" engraved on the back of my lug? I've got vague memories of someone having something similar once but googling "Speedmaster", "lugs", "engraved/ing" turns up a million results.
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