Last night I had a chance to look the gun over very carefully. The ramp front has had a red insert added. It is nicely done, but it is slightly smaller in size when compared with the other red ramps I have. I measured the cylinder length as compared to my Model of 1950, 45 acp (which is the only other Smith 45 I own) and the cylinder length is .040 longer on the 625-2, which makes sense in order to accommodate the 45 colt.
The SCSW book is somewhat cryptic about this model. They state there is much confusing information surrounding the introduction of this model, further stating "we have come up with varying production quantities for both 1988 and 1989 variations, so have deleted quantities from the book until the matter can be clarified. Also we find that calibers seemed to be mixed between the engineering changes, thus creating further confusion."
I am beginning to think a letter is the only way I can legitimately get to the bottom of what this is.
All that said, it is a cool revolver and definitely one that I am looking forward to shooting. As some of you have mentioned it is a great configuration in a classic caliber so should be fun. I am not much of a photographer, but another friend of mine on the forum is, so I will impose on him to get some pictures up in the next week or so. He is out of town. Anyway, thanks for your help, comments and ideas. I think the true answer lies with Roy.