Congratulations- you have a revolver that should be known as the Peacemaker of the 20th century. In a nutshell, they are durable, reliable, accurate, dang near idiot proof, and require very little maintenance beyond periodic cleaning, and a drop or two of lubricant.
They began as the Military and Police Model in 1899 with the creation of the .38 Special cartridge. later, when S&W began numbering models, it was the model 10. The dash numbers indicate engineering changes- the 10-5 was made only briefly in 1962 (when they went to a thicker front sight) and was quickly superseded by the 10-6, I think that same year.
More than 6 million of these revolvers were made over the production life. Barrel lengths as short as 2" and as long as 6 are known, but the 4 and 5 inch are most common. The standard caliber is .38 S&W Special, altho some during the war were made in .38 S&W (not special) and one model was made in .357 magnum.
To post pictures, use the paperclip just to the right of the white smiley face (tool bar above where you are typing)
There is no need to take anything apart on this revolver for ordinary cleaning and maintenance, and I would strongly suggest you refrain from doing so. If you do not have an owner's manual, click HERE: http://stevespages.com/pdf/s&w_10.pdf and print one.