I have an 80 Serial numbered, Pre-80 Series Combat Commander. Mine was meticulously re-worked by Dave Erickson of Condition One Pistolsmithing (
http://www.conditionone.us). There is no reason to stay away from this one. If the price is right, snatch it up. Mine is serial numbered: 80BS105XX. When I called Colt's, they told me that they knew that the 80 Series was coming, and they ran out of 70 series serial numbers, so they just started in on the 80's. Sounds weird to me, but that's what they said. Mine was made in 1981, and has no FPS or holes in the frame or slide. Great gun all the way around. It is the prize of my collection, thanks to Dave. Good luck!