100-400 USD
The 1966 Mod 60 Smith & Wesson in good condition is worth $1,200.00
Does not follow J frame sn convention. You will have to call S&W to find out.
About $400.
The worth is $539
50-400 uSD
100-1000 depending on EXACTLY what you have.
Impossible to answer without a sn.
That all depends on what kind of Smith & Wesson it is.
100-250 or so
100-300 USD
It is $531.38 if new but $496.70 if used
100-300 USD or so