You must call Colt to find out.
Proofhouse.com has Colt sn tables you can look at.
1891
about 1953
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.
No
Age - no way to answer since no sn was provided. Value - 10-250 USd
Colt data at Proofhouse.com
You will have to call Colt with the sn to find out.
You will have to call Colt.
You will have to call Colt.
44 years old, made in 1967.