Well, here is a fly in the ointment. There is nothing special about 44 Special. It was just a marketing term, much like 38 Special or 32 Winchester Special. But the revolvers that fired it are special.
Smith and Wesson had developed the 38 Special, or 38 Smith and Wesson Special as they preferred to call it, in 1899 if memory serves, for their first 38 caliber Military and Police revolver, the 38 Military and Police 1st Model, also known as the Model of 1899 Army-Navy revolver. When first developed, the 38 Special was loaded with Black Powder, which is why the case is so big, and why it looks so empty when loaded with Smokeless powder.
Here is a Model of 1899, easily recognized because it lacks an underbarrel latch in front of the ejector rod.
In 1908 S&W introduced the 44 Hand Ejector, 1st Model, also known as the New Century, but affectionately know as the Triple Lock, because of the extra latching mechanism. The 44 Special cartridge was introduced with this model. I have read various opinions that the cartridge was originally loaded with Black Powder, not Smokeless, but have never gotten to the bottom of that. This Triple Lock is a very early one, Roy Jinks told me it actually shipped in 1907, not 1908. Note the caliber marking on the barrel only says 44 S&W CTG, not the more common later marking of 44 S&W SPECIAL CTG. Roy said they probably had not come up with the 44 S&W SPECIAL CTG stamp yet when this one shipped.
The parent case to the new 44 Special was the old 44 Russian. Left to right in this photo the cartridges are 44 Magnum, 44 Special, 44 Russian, 44-40 and 38-40. The 44 Special was just a little bit longer then the 44 Russian. Sorry, I don't recall exactly how much longer. I have read that the ballistics of the new cartridge merely duplicated the 246 grain 755 f/s ballistics of the older 44 Russian cartridge, but it did retain the 44 Russian's reputation for accuracy.
While I'm at it here is a photo of the third latch of a Triple Lock.
And here is the hardened insert mounted on the yoke that received the third latch.
Here is an unusual Triple Lock, a Target Model with tall front sight and adjustable rear sight.
A nickle plated Triple Lock.
In 1915 Smith and Wesson deleted the third latch with the 44 Hand Ejector 2nd Model.
This is a 44 Hand Ejecctor 3rd Model, also known as the Wolf & Klar Model, for the distributor that requested S&W put a large under barrel shroud under the barrel. This particular example was carried by an officer during WWII. It was refinished and nickel plated at some point, S&W never nickle plated hammers or triggers.
A 44 Hand Ejector 4th Model.
Like I said, there is nothing 'special' about the 44 Special cartridge, but a lot of the revolvers chambered for it are very special.
I see there are still problems posting some of my photos.