I have a 60-7 that I recently found. My serial number BFU93XX has the normal engraving. Same as my 66-2 (mid 80s). But my 66-4 (mid 90s) does have the pinpoint serial number engraving. Since the 60-7 appears to be a 1990 only production run, S&W must have changed the way it stamped serial numbers on guns sometime in 1990 and I have an early production and you have a later production 60-7.

I love my 60-7. It saved my opinion of J-frames which was soured by a new titanium/scandium model that I purchased a while back and absolutely hated to shoot. I've been curious if my 60-7 really was +P rated. Appears to be from what people are saying. I usually only practice with standard .38, but I prefer to carry the heavy +P buffalo bore stuff.