This 65-3 was produced in 1987. Other notable events from that year include Gary Hart dropping out of the Presidential race, Sonny Bono running for the office of Mayor of Palm Springs, and Ronald Reagan delivering what was possibly his most important speech. U2 released The Joshua Tree, and Rick Astley's song "Never Gonna Give You Up" reached #1 on both sides of the Atlantic, long before anybody with taste found it the least bit ironic.
The Model 65 was produced from 1972 until 2004. It was the fixed-sight counterpart to the 66, and was carried by the Customs Service, as well as several state police agencies.
A common misconception is that the 65 was a stainless version of the Model 13. This isn't entirely true, as the 13 was not introduced until 1974. Prior to that, the blued counterpart to the 65 was the 10-6, which had been upgraded to .357. While the 19 and 66 were referred to as the Combat Magnums, the 65 and 13 were never explicitly named. Given their heritage, they could be referred to as the Military & Police Magnums.
Both the 13 and 65 share the distinction of being among the last standard-issue revolvers in law enforcement. There's some confusion as to which was the last issue revolver for the F.B.I. As far as I can tell, it varied by field office and starting date, but agents were carrying both well into the 1980's.