As a former Texas Dept. of Corrections officer, whom worked prior to the introduction of the Model 65, I saw many, many older (and I do mean older) Smith & Wesson revolvers. They used and abused M & Ps and Model 10s, to the point that most of the forum members would be scared to pull the trigger on one of the guns with a round in the chamber. I don't think that this revolver came from the Texas Dept. of Corrections as a Model 65 is chamber for 357 Magnum. As far as I know, they only issued 38 Special revolvers and still do to this date. I may be wrong, but a 357 just seems wrong for them thinking of their administration and how it works.
Some of the old guns I refer to above had the sides of their barrels worn completely away for an inch or so from the muzzle due to extreme holster wear. When I say worn away, I mean you could see the rifling in the bores of the non-worn side from a side view of the revolver, without looking down the bore. Lock-up on some was non-existent, and yes, they were carried in that condition. I know that sometime after I quit, they bought a large lot of Ruger Security/Service Sixes to begin abusing.
Maybe someone from Tennessee can verify that the Model 65 came from there or possibly somewhere else.