500-800 depending on what "very good" turns out to be.
Yes
You will have to call Colt with the serial number.
Very poor description to base a value on. Broad range 300-800 USD.
The Colt AR-15 is a sporter rifle
$100 and up, depending on condition,markings,and history.
100-1000 usd
@ 40 inches.
Contact Colt, on line aucitons.
value depends totally on overall condition. you can own a junk colt worth $200 in parts. or, a good condition colt worth $1000 or more.
Proofhouse.com has Colt sn data. If not there, call Colt and they will tell you.
600-1200
How much a Police Colt 38 dated 1885 is worth will depend on the condition, and the demand for the piece. One that is in good condition would be worth several hundred dollars.