I recently purchased a 1968 SMDV. Being the obsessive, impulsive git that I am, after buying it I began to do even MORE research instead of just relaxing happily and waiting the 18 months +/- (!) it’ll take customs to clear the watch. My further reading indicates the ‘SM and DV were split after 1967’ debate rages on. So, while these aren’t 166.002 like the one I bought, it seems to point to Omega continuing the marketing of SMDVs well after 1967 and into the 1970s.