Black Rifle II by C. Bartocci has what you are looking for
You can find out at Proofhouse.com in the Colt tables.
1979 is the year
Proofhouse.com has Colt sn data
You will have to call Colt with the sn to find out.
What is the manufacture date of a Colt AR15 rifle serial number 192754 model SP1
Proofhouse.com has Colt sn data. If it's not there, call Colt
You will have to call Colt to find out.
Proofhouse.com has Colt sn data.
Proofhouse.com has Colt sn data.
100-1000 or so
@1964
50-1500 usd