Records I have go up to 1978 with serial number starting at R13901 ,so maybe a year or two after>
what is the manufacturing date fo a colt diamondback serial number O72239
Diamondback serial # D69679. was mfg'd in 1975. made about 1976
1977
Post 78
You will have to call Colt. Published sn data does not show any Diamondback with a sn starting with a P
made about 1977
made about 1972
Proofhouse.com has Colt sn tables. You can also call Colt and they will tell you.
are you sure the '0' is not a 'D' ????? in the serial number
1970
Post 1978. You will have to call Colt to narrow it down further.
Try looking it up at Proofhouse.com.