Assuming you mean a Ruger Mk II, it will depend on condition, barrel, sights, etc, but probably $150-$275.
value is based on overall condition, model and serial number........................
50-150 dollars
75 - 150 USD
Don't know the value,but was produced around 1950
100-1000 USD depending on specifics.
50-300
50-175 or so
Browning Challenger made in 1974. $300-$400.
50-250 USD or so
You will have to call Colt. 50-225 USD
$200-275, depending on condition.
Between $100 and $250, depending on condition.