Can't be answered since you did not provide the serial number.
45
1942-45
45 Smith and Wesson
45 years old
1942-45. Probably 38 special
45 yrs old
What is the value of my 1955 smith & wesson 45 target master revolver?
You can get manuals at the Smith and Wesson website.
You might have better luck asking at smith-wessonforum.com
42-45. Model 10 designation did not occur for another 12 years.
No
No such model number