Go to proofhouse.com. Possibly a new army & navy model .41 made about 1901.
No
You must call Colt to find out.
Proofhouse.com has Colt sn tables. You can also call Colt and they will tell you.
Impossible to answer without the sn. Call Colt and they will tell you.
Proofhouse.com has Colt sn tables you can look at.
1891
If you call Colt and provide the sn, they will tell you.
about 1953
about 1966
about 1947
Made in 1974, 35 y.o.
Don't know the value, but a Colt police positive special with that serial number was made about 1919.