You need to get it lettered by S&W. Cost is 50 USD. If it letters as 38 Special, seek a professional appraisal.
250-500
GunBroker.com
Good condition with orig grips blue $1000 nickel $1400.
value of smith & Wesson model 5906 pistol
Depending on the exterior condition with pearls, $700.00 to $900.00.
CHeck with the maker of the grip.
Take it to a gunsmith
Need a sn to date it.
300-700 USD
No such model number
No model provided
No such model that I am aware of.