FBI 1076
I have a documented FBI 1076 (letter by Jinks, serial # TEU01XX) that does not have the letter "U" stamped on the underside of the trigger guard. It does have the 2 dots under the decocker lever. Mine went to the FBI in 1990 and returned to S&W in 1992. It was then shipped to Lew Horton in 1994. After a few journeys, I had the luck to acquire it a few years back. It was a real beater when I got it. However, I returned it to S&W to do a complete overhaul with new sights (not night sights), grips (straight, which I prefer) and a metal refinish, just like it came out of the factory in '90, as the FBI originally received it (or close to it). One of my prized S&W's now. Anyway, sorry for the long story, I couldn't contain my joy!