Correction for my post -- I was not referring to the SCSW 3rd Edition, which is a silly mistake on my part. It was my 2nd Edition as I don't have the 3rd but I eagerly await the 4th.

And yes, upon reading the SCSW entry again, I am now thoroughly confused as you bring up an excellent point. It states clearly that the 10th Anniversary IPSC makred pistols are all DVC prefix and that range runs from DVC0001 to DVC5000, but only for the first year of 745 production. The follow-up years show different product codes.

The 745 that I have (and really love!) is a TBM prefix, originally shipped with fixed sights. The 2nd Edition merely says that product 103906 has adjustable sights and "Special 1990."

I would love to see all S&W enthusiasts make a database with images of their factory letters. These letters are often chock-full of interesting details.