You can not determine the exact model with just a serial number.
You can not tell the model number with just the serial number.
Your question cannot be answered without you providing the serial number to your model 586 Smith and Wesson revolver.
Can't tell model number from just the serial number.
c.1956
1977-78.
behind the celinder
No way to answer without the serial number.
Impossible to answer with the information given.
With the brief description that you have supplied,I would say that you have a SMith and Wesson model of 1905 4th change revolver.
The Smith and Wesson model K14-3 was produced from 1947-1982. You would need to write into Smith and Wesson with the model and serial number. They can pull the date and send it back to you.
@ 1978
1977