It is virtually impossible to give a value on any firearm with the description you gave. You do not mention the type of finish, overall condition, material the grips are made of, sights, any accessories, engraving, papers, box or historical association with a person or event. It could be in the 10-1000 USD range.
Age of smith Wesson serial no 5K4166
a lot
$500
Requires professional appraisal
Unknown
the value ranges from $200.00-$800.00 depending on the condition of the fire arm.
value depends on overall condition...............
175 or so
value is based on overall condition..........
double barrel 16 ga.
Can't be answered without knowing who made it.
I have a octagonal barrel .32 caliber Remington Patent date May 3, 1864 - What would it be worth?