if a pistol, tnen the same way as the military 45 cal pistol
check out: http://stevespages.com/page7b/htm
no, not that i know of
yes
You will have to call Colt
Proofhouse.com has Colt sn data.
1971
ok
1962
The Book of Colt Firearms by R. L. Wilson. Alternatively, you can request a history letter from Colt.
about 1902
1971
No serial number provided.
Try egunparts.com