It includes just about everything you need to know about Colt’s .357 Mag. that was part of the premium revolver market. The Python was introduced in 1955 and production continued until 1999, though some could be made by special order after that.
The book offers what is called the most complete Python serial number information, and each gun is shown with its Colt Archives letter that shows when and where that gun was shipped and details about its original configuration.
The book has an MSRP of $65 and is available here, or by calling (800) 877-4867, ext. 3.