Colt's records, R.L. Wilson's The Book of Colt Firearms to name a few.
Find them at proofhouse.com.
Try Proofhouse.com
In 1849, production of the Colt Pocket Percussion revolvers began. Below is a link with a short history of the Pocket Colt.
value depends on overall condition...............
Check the Blue Book of Gun Values, Stanard Firearms Dicitionary or proofhouse.com 1903. Colt single action revolvers in 1903 started with serial number 238,000 and 1904 serial numbers started at 250,000.
double action colt revolvers 1905 - 1978 Serial # 507493 made about 1925
Go to proofhouse.com for Colt combat commander serial numbers.
You will have to get it lettered by Colt to find out who it went to.
Late 1969 is what it appears to be by number. No serial number site concerning Colt revolvers lists any preceding letters like "A".
Serial numbers dont go that low on Offical Police revolvers. Need to know caliber,barrel length,barrel markings,etc.
You need a professional appraiser
You will have to cal Colt to find out. SN data published stops @ 1985