I do not exactly need it, but 17M is pretty close and would be fun if it's within this range: http://omegaforums.net/threads/vintage-constellations-show-and-tell.19186/page-2#post-207939.
It should be ref 14381 with 551 movement. BTW, Tom, do you know if the serial number is within the 20k range above?
Had to post. Yet another example ... http://omegaforums.net/threads/omega-constellation-ref-ot-14381-just-because-it-is-friday.4431/
Hard to get really good pics without natural lighting (for me) and no time really to set up for good pics at the moment. Omega Constellation w/Railroad Track Dial Movement / Cal 551 (no date) Serial No.: 17 mm Case Ref.: 14381 2 SC (CB) Condition is generally better than my pics show, I think & Caseback Medallion in great condition Thanks!!
I think this 18k has been added to my collection since last time this thread was up. The dial looks a little blueish in the pictures but it is a pure silver-white in reality.