When was the model 66-2 with a serial number of 91893 made?

The Model 66-2 is a revolver produced by Smith & Wesson, and it was manufactured from 1982 to 1988. A serial number of 91893 indicates that it was likely made during the early to mid-1980s. For a precise date, consulting a detailed production date chart or contacting Smith & Wesson directly would be necessary.