Don't know the value ,but was mfg'd around 1975.
1976
proofhouse.com/colt/index.html
With this serial number you might have one of only 2000 to 3000 colts ever produced with this trigger and rear sight combinations. Most colts of this era have had the main spring housing replaced with a hardened housing to accept high velocity ammo. If it has the original mainspring housing and box this is a woodsman collectors must have. I have only seen one come up for auction in the last two years and it fetched $1589 without a box.
Go to www.proofhouse.com Serial numbers for most all Colts are there.
www.proofhouse.com
Colts serial number database lists only the Combat Commander, and they have no serial numbers that begin with "CJ", though for a number of years the Combat Commander had serial numbers that began with "CL"
Proofhouse.com has serial numbers for Colts. Yours is somewhere in the early to mid 50's
there are different model colts. what is your model, caliber and overall condition. serial number would help...............
Go To the colts website and call the customer service number. They can tell you what year it was made. Just need your serial number
Go to proofhouse.com to look up date. There are more that one type of SA Navy Colts.
Joseph Addai (number 29) joined the Colts in 2006.
Ahmad Bradshaw is number 44 on the Indianapolis Colts.