The original Detective Special was made from the 1920s to the early 70s. These had a tapered barrel and open ejector rod.
The 2nd version DS had a heavier barrel with a full ejector rod shroud. I believe it was at this time the grip frame was shortened, but I'm not sure. Early 2nd versions came with chunky checkered wood grips which worked very well. Later versions came with the Pacmyer Compac rubber grips as standard.
The originals were based on the older Colt V-spring action (same as the Python) and very smooth.
The SF VI (small frame, 6shot) was intended to replace the DS. While externally it looked like the DS, its action was based on the Trooper revolvers and not nearly as good. When it failed, Colt introduced the DS II which was basicly the same gun with a name change. The .357 version was called the Magnum Carry, which failed before it ever got started good. If I'm not mistaken, all three of the replacement models were only made in Stainless Steel.
All of these guns were clearly marked as to which model it was. If the barrel on your gun is stamped "Detective Special", you've got the original.
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