Great thread. I came across it this morning while doing some research on my 3" that I'm considering offering up for a trade.

Mine is identical to the one in Post #12 - rubber grips, new-style cylinder latch, new style rear sight and pinned stainless red ramp front sight - new in box with papers and lock.
66-4 102712 CCN14XX 8040

I also have a 3.25" Hi-Viz.
66-5 102720 CEL29XX 0280