Call S&W and ask for a manual or find a gunsmith and ask for help.
A Smith and Wesson 459 (or 5904) 9mm in mint condition and deactivated is worth around £400 currently
50-500 usd
Ask a gunsmith for help.
50-500 usd
In perfect shape...about $1,000.00
Recommend you seek the services of a gunsmith.
25-33 yearws old
50-425 usd
50-450 usd
If you don't have a manual, you will need a good gunsmith
You need to find a firearms instructor.
You need the services of a firearms instructor or a good gunsmith.