I suggest you get ahold of Colt on the phone or online. Either way you should be able to get an owner's manual. You could also go to your nearest gun shop/gunsmith and ask for help. In any event, ask for help if you are inexperienced. We all started out that way, regardless of whether it's with a Colt 45 or a car.
You will have to call Colt to find out.
You need to call Colt. That sn is beyond the published lists.
1980-1983
proofhouse.com
it is disassembled the same way as a military 45 pistol..................
yes
100-1000 depending on specifics
50-500 USD. You must call Colt
You must call Colt. 50-500 USD
Published data doesn't cover your sn. You will have to call Colt.
100-1500 USD
No such Model in the Colt line.