1970
1959
about 1875
After 1978.
Impossible to answer. Serial numbers are not unique to only one firearm, and there is no single database of ALL firearm serial numbers.
No serial number provide; 50-850 USD
1958
If the Ruger website is up, it has sn data
No published sn data.
It is a Model 1885. With the serial number, I can provide you with the specific year of manufacture.
it ain't worth a monkeys left ball
No published sn data.