Model 1000 series - go to their website for specs.
Standard Catalog of Smith and Wesson
50-350 usd
Yes. Many different models made.
100-300 USD
50-250 usd
Your serial number was used by Smith and Wesson for the models 10,12,13,45,64,65,547.It dates this serial number to the year 1979.
Caliber and wood.
100-300 USD or so
100-325 UD
It will be marked on the barrel
100-300 or so
50-250 usd