I just purchased a S & W revolver, and really don't know exactly what I have. It is blue finish with hard rubber grips, and the barrel measures 4 inches. On the barrel it states Smith & Wesson Springfield Mass USA, with patd April 9 89. March 27 94. May 2 95. July 10 95, Aug 4th 96. Dec 22 96, Oct 4 98. Oct 8 01. Dec 17. Can't see the year for the last date. The only numbers that I can find are one stamped on the inside when you open the cylinder 11876, and the other is stamped on the inside of one of the grips 20773. If anyone could give me any info, I would really appreciate it!!!