Mine too is one of the first, with the rounded top, spur hammer, pre-enhanced, etc. It's the one that had the crack in the breech face that DSK was kind enough to post the photos of for me a while back. Sent it back to Colt last week to get their opinion of what could be done to remedy the problem. Cindy called me today, said they got it, appraised the situation, and should have it back to me in roughly 15 days, repaired, at no cost. I can't wait to see how it looks when it gets back home. I'll let you know how it went.
You know, that's an example of the Colt company that my great uncle was proud to be a part of for so many years...
Mikey