No such model.
150 or so
S&W did not make a model called "police special",
value depends on overall condition and model.................
50-500 usd
Will depend on the EXACT make, model, and condition. Anywhere from $100-$600
100 or so
300 USD or so
About $75, depending on condition. Yours is the 2nd Model, finish is nickel plate, not chrome.
Don't know value, but a police positive special with that serial number was made in 1946
Don't know value, but made about 1913 for police positive special
Many different models, value is based on exact make and model, and condition. Could be anywhere from $100-$600.
No such model number in the S&W line.