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.
It will be marked on the barrel
100-325 UD
0-200 USD or so
50-250 usd
50-250 usd