Just took a flyer on this Constellation for not a lot of money. It looks OK to me but can I get your opinions? These are the sellers photos.
This is the Omega Vintage Database listing for your watch in an 18K gold version. All the other vitals are the same: http://www.omegawatches.com/planet-omega/heritage/vintage-omegas/vintage-watches-database?ref=14354 If the band is original, I would preserve it and have another one custom made. Or try to find the correct steel Omega bracelet. It should clean up nice, but you need to be very careful with these cal. 1001 movements. They don't have the greatest reputation for reliability. Best to have a watchmaker inspect it as soon as you can. gatorcpa