kwill1911
Member
When the disgraced R.L. Wilson was doing research for The Book of Colt Firearms, he put together serial number tables for all Colt models. He made estimates for the shipping years by just spreading the high/low numbers in each year. However, Colt, like S&W, did not ship in SN sequence and sometimes the dates are way off, especially for wartime production...especially for commercial guns sold to the military. Proofhouse and Colt still use these estimates for the online databases. The only sure way to know is research in the Colt Archives for a specific serial number, i.e. get a letter. Base on the first couple of digits I can see, and the finish, I think it will have an interesting shipping destination but if you're paranoid about the number then you'll need to spend the $100 for a letter.