Diamondback Serial Numbers * 1966 - D1001 * 1967 - D2600 * 1968 - D14400 * 1969 - D26500 * 1970 - D38450 * 1971 - D45551 * 1972 - D51400 * 1973 - D55401 * 1974 - D59801 * 1975 - D60251 * 1976 - D72251-D99999 * 1976 - N01001-N01800 * 1977 - N01801-N15674 * 1978 - R13901 * 1979 - S65863
Made in 1975.
made about 1972
Made in 1967.Second year of production.
what is the manufacturing date fo a colt diamondback serial number O72239
You will have to call Colt.
1972
You will have to call Colt. Published sn data does not show any Diamondback with a sn starting with a P
1977
Post 78
made 1976
Proofhouse.com has Colt sn tables. You can also call Colt and they will tell you.
Diamondback serial # D69679. was mfg'd in 1975. made about 1976