Proofhouse.com has Colt sn data.
It was made in 1975
Made in 1964. First year of production.
According to info available on ar15.com, your weapon was manufactured in either late 1972 or early 1973. I own one made in 1974.
Made 1974 if sn reads SP33829. Value depends on condition. Range from 500-1000
Eugene Stone, from the ArmaLite corporation. After that, Colt "bought" the project.
colt fronter six shooter serial # 1186654
A Colt 1903 hammerless .32 with that serial number was made in 1919.
The Colt 1911 government model with that serial number was made in 1919,
Your colt was made in 1966.
Colt single action army with that serial number was made in 1910
The government model with that serial number was made by Colt in 1944.
The records I have show a Colt Cobra with that serial number made in 1974.