Model 36 Chief Special Question: What exactly is meant by Pre dash? Thanks.
Since you specifically asked about the Chiefs Specials, it's even a bit more complicated than the examples Pisgah and s&wchad used.
Dr. Roy Jinks explains in his book,
History of Smith & Wesson, that the Chiefs Specials underwent at least four significant "engineering changes" without a change to the model name/number. We don't know why S&W chose to make those changes without identifying the changes as it did with other models.
When S&W finally did add the dash to Chiefs Specials (other than the 36-1 chad already identified), it was 1988. The Model 36 with a 2" barrel became the Model 36-2, and the Model 36-1 with a 3" Heavy Barrel became the Model 36-3. In rapid succession in the late '80s and early '90s the 2" barrels changed to the 36-4, then the 36-7, and finally the 36-9. The 3" Heavy Barrels were subsequently the 36-5, 36-6 (a limited run of Target Models), and 36-8.
When S&W began producing revolvers with the internal lock, the carbon steel Chiefs Specials became the 36-10, and have been available with both 2" and 3" barrels.
Now then, if you really want to get crazy with the dashes, track the Chiefs Special Model 60s.
