Proofhouse.com has sn data
You must call Colt to find out.
The Colt model 1911 commercial .45 with serial # 70G67301was produced in 1974.The serial numbers in 1975started with 70G73001.
Colt data at Proofhouse.com
You will have to call Colt with the sn to find out.
You will need to call Colt.
No such model in the Colt line.
You will have to call Colt and provide the serial number to find out.
Proofhouse.com has Colt sn tables. You can also call Colt and they will tell you.
the colt national match series with NM after the serial number started in 1957. So your gun would have been made about or shortly after 1957............
about 1914
1995
Impossible to answer without the sn. Call Colt and they will tell you.